feat(platform): harden telemetry pipeline and unify Semi UI workspaces

2026-07-18 00:26:36 +08:00
parent 65b4e4f055
commit 159c80b0ae
136 changed files with 21616 additions and 1785 deletions
--- a/vehicle-data-platform/apps/api/internal/platform/access_store.go
+++ b/vehicle-data-platform/apps/api/internal/platform/access_store.go
@@ -65,7 +65,7 @@ func (s *ProductionStore) AccessEvidence(ctx context.Context) ([]AccessEvidenceR
 	rows, err := s.db.QueryContext(ctx, `SELECT
 v.vin,
 COALESCE(NULLIF(s.plate, ''), NULLIF(b.plate, ''), '') AS plate,
-COALESCE(NULLIF(b.oem, ''), '') AS oem,
+COALESCE(NULLIF(p.brand_name, ''), NULLIF(b.oem, ''), '') AS oem,
 COALESCE(p.model_name, '') AS model_name,
 COALESCE(p.company_name, '') AS company_name,
 COALESCE(s.protocol, '') AS protocol,
@@ -145,7 +145,7 @@ LIMIT ?`, accessEvidenceLimit+1)
 }

 func (s *ProductionStore) ensureAccessSchema(ctx context.Context) error {
-	s.accessSchemaOnce.Do(func() {
+	return s.accessSchema.ensure(func() error {
 		statements := []string{
 			`CREATE TABLE IF NOT EXISTS vehicle_access_threshold_config (
  id TINYINT NOT NULL PRIMARY KEY,
@@ -170,17 +170,16 @@ func (s *ProductionStore) ensureAccessSchema(ctx context.Context) error {
 		}
 		for _, statement := range statements {
 			if _, err := s.db.ExecContext(ctx, statement); err != nil {
-				s.accessSchemaErr = err
-				return
+				return err
 			}
 		}
 		defaults := defaultAccessThresholds(time.Now())
 		protocols, _ := json.Marshal(defaults.Protocols)
-		_, s.accessSchemaErr = s.db.ExecContext(ctx, `INSERT IGNORE INTO vehicle_access_threshold_config
+		_, err := s.db.ExecContext(ctx, `INSERT IGNORE INTO vehicle_access_threshold_config
 (id, version, default_threshold_sec, delay_threshold_sec, long_offline_sec, protocol_overrides_json, updated_by)
 VALUES (1, ?, ?, ?, ?, ?, ?)`, defaults.Version, defaults.DefaultThresholdSec, defaults.DelayThresholdSec, defaults.LongOfflineSec, string(protocols), defaults.UpdatedBy)
+		return err
 	})
-	return s.accessSchemaErr
 }

 func (s *ProductionStore) AccessThresholds(ctx context.Context) (AccessThresholdConfig, error) {
--- a/vehicle-data-platform/apps/api/internal/platform/alert_evaluator.go
+++ b/vehicle-data-platform/apps/api/internal/platform/alert_evaluator.go
@@ -439,7 +439,7 @@ func loadActiveAlertEvents(ctx context.Context, tx *sql.Tx) (map[string][]alertA
 }

 func (s *ProductionStore) alertEvaluationEvidence(ctx context.Context) ([]alertEvaluationEvidence, error) {
-	rows, err := s.db.QueryContext(ctx, `SELECT l.vin,COALESCE(NULLIF(l.plate,''),NULLIF(b.plate,''),''),l.protocol,COALESCE(b.oem,''),COALESCE(p.model_name,''),COALESCE(p.company_name,''),COALESCE(l.speed_kmh,0),COALESCE(l.soc_percent,0),COALESCE(l.alarm_flag,0),COALESCE(l.longitude,0),COALESCE(l.latitude,0),COALESCE(l.event_id,''),COALESCE(DATE_FORMAT(l.event_time,'%Y-%m-%d %H:%i:%s.%f'),''),COALESCE(DATE_FORMAT(l.received_at,'%Y-%m-%d %H:%i:%s.%f'),''),GREATEST(0,TIMESTAMPDIFF(SECOND,l.updated_at,NOW())),TIMESTAMPDIFF(SECOND,l.event_time,l.received_at),COALESCE(CONCAT(l.longitude,',',l.latitude),'') FROM vehicle_realtime_location l LEFT JOIN vehicle_identity_binding b ON b.vin=l.vin LEFT JOIN vehicle_profile p ON p.vin=l.vin WHERE l.vin<>'' ORDER BY l.updated_at DESC LIMIT ?`, alertEvaluationVehicleLimit+1)
+	rows, err := s.db.QueryContext(ctx, `SELECT l.vin,COALESCE(NULLIF(l.plate,''),NULLIF(b.plate,''),''),l.protocol,COALESCE(NULLIF(p.brand_name,''),NULLIF(b.oem,''),''),COALESCE(p.model_name,''),COALESCE(p.company_name,''),COALESCE(l.speed_kmh,0),COALESCE(l.soc_percent,0),COALESCE(l.alarm_flag,0),COALESCE(l.longitude,0),COALESCE(l.latitude,0),COALESCE(l.event_id,''),COALESCE(DATE_FORMAT(l.event_time,'%Y-%m-%d %H:%i:%s.%f'),''),COALESCE(DATE_FORMAT(l.received_at,'%Y-%m-%d %H:%i:%s.%f'),''),GREATEST(0,TIMESTAMPDIFF(SECOND,l.updated_at,NOW())),TIMESTAMPDIFF(SECOND,l.event_time,l.received_at),COALESCE(CONCAT(l.longitude,',',l.latitude),'') FROM vehicle_realtime_location l LEFT JOIN vehicle_identity_binding b ON b.vin=l.vin LEFT JOIN vehicle_profile p ON p.vin=l.vin WHERE l.vin<>'' ORDER BY l.updated_at DESC LIMIT ?`, alertEvaluationVehicleLimit+1)
 	if err != nil {
 		return nil, err
 	}
--- a/vehicle-data-platform/apps/api/internal/platform/alert_store.go
+++ b/vehicle-data-platform/apps/api/internal/platform/alert_store.go
@@ -10,14 +10,13 @@ import (
 )

 func (s *ProductionStore) ensureAlertSchema(ctx context.Context) error {
-	s.alertSchemaOnce.Do(func() {
+	return s.alertSchema.ensure(func() error {
 		var count int
-		s.alertSchemaErr = s.db.QueryRowContext(ctx, `SELECT COUNT(*) FROM vehicle_alert_rule`).Scan(&count)
-		if s.alertSchemaErr != nil {
-			s.alertSchemaErr = fmt.Errorf("alert center schema unavailable; apply deploy/migrations/002_alert_center.sql: %w", s.alertSchemaErr)
+		if err := s.db.QueryRowContext(ctx, `SELECT COUNT(*) FROM vehicle_alert_rule`).Scan(&count); err != nil {
+			return fmt.Errorf("alert center schema unavailable; apply deploy/migrations/002_alert_center.sql: %w", err)
 		}
+		return nil
 	})
-	return s.alertSchemaErr
 }

 func (s *ProductionStore) AlertSummary(ctx context.Context, query AlertQuery) (AlertSummary, error) {
--- a/vehicle-data-platform/apps/api/internal/platform/alert_stream_evaluator.go
+++ b/vehicle-data-platform/apps/api/internal/platform/alert_stream_evaluator.go
@@ -367,7 +367,7 @@ func loadAlertStreamVehicleMetadata(ctx context.Context, tx *sql.Tx, records []A
 		selects[i] = "SELECT ? AS vin"
 		args[i] = vin
 	}
-	query := `SELECT v.vin,COALESCE(MAX(NULLIF(b.plate,'')),''),COALESCE(MAX(b.oem),''),COALESCE(MAX(p.model_name),''),COALESCE(MAX(p.company_name),'') FROM (` + strings.Join(selects, " UNION ALL ") + `) v LEFT JOIN vehicle_identity_binding b ON b.vin=v.vin LEFT JOIN vehicle_profile p ON p.vin=v.vin GROUP BY v.vin`
+	query := `SELECT v.vin,COALESCE(MAX(NULLIF(b.plate,'')),''),COALESCE(MAX(NULLIF(p.brand_name,'')),MAX(NULLIF(b.oem,'')),''),COALESCE(MAX(p.model_name),''),COALESCE(MAX(p.company_name),'') FROM (` + strings.Join(selects, " UNION ALL ") + `) v LEFT JOIN vehicle_identity_binding b ON b.vin=v.vin LEFT JOIN vehicle_profile p ON p.vin=v.vin GROUP BY v.vin`
 	rows, err := tx.QueryContext(ctx, query, args...)
 	if err != nil {
 		return nil, err
--- a/vehicle-data-platform/apps/api/internal/platform/alert_test.go
+++ b/vehicle-data-platform/apps/api/internal/platform/alert_test.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
 	"net/http"
 	"net/http/httptest"
 	"regexp"
@@ -15,6 +16,33 @@ import (
 	"github.com/DATA-DOG/go-sqlmock"
 )

+func TestAlertSchemaProbeRetriesAfterCanceledRequestAndCachesSuccess(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+	store := NewProductionStore(db, nil, "")
+
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+	if err := store.ensureAlertSchema(ctx); !errors.Is(err, context.Canceled) {
+		t.Fatalf("expected canceled schema probe, got %v", err)
+	}
+
+	mock.ExpectQuery(regexp.QuoteMeta(`SELECT COUNT(*) FROM vehicle_alert_rule`)).
+		WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(1))
+	if err := store.ensureAlertSchema(t.Context()); err != nil {
+		t.Fatalf("expected retry to succeed, got %v", err)
+	}
+	if err := store.ensureAlertSchema(t.Context()); err != nil {
+		t.Fatalf("expected successful probe to stay cached, got %v", err)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatal(err)
+	}
+}
+
 type configuredMetricStore struct {
 	*MockStore
 	definitions []MetricDefinition
--- a/vehicle-data-platform/apps/api/internal/platform/gb32960_reference.go
+++ b/vehicle-data-platform/apps/api/internal/platform/gb32960_reference.go
@@ -0,0 +1,227 @@
+package platform
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// gb32960FieldReference is the platform copy of the authoritative Chinese
+// terminology supplied for GB/T 32960 and the Guangdong fuel-cell extension.
+// It enriches protocol values at read time without changing the stored RAW
+// evidence or replacing the parser's stable source-field keys.
+type gb32960FieldReference struct {
+	Label         string
+	Unit          string
+	Description   string
+	ValueMappings []MetricValueMapping
+}
+
+func enumMappings(values ...string) []MetricValueMapping {
+	result := make([]MetricValueMapping, 0, len(values)/3)
+	for index := 0; index+2 < len(values); index += 3 {
+		result = append(result, MetricValueMapping{Value: values[index], Label: values[index+1], Description: values[index+2]})
+	}
+	return result
+}
+
+var gb32960PositionMappings = func() []MetricValueMapping {
+	result := make([]MetricValueMapping, 0, 8)
+	for value := 0; value < 8; value++ {
+		parts := []string{"有效定位", "北纬", "东经"}
+		if value&1 != 0 {
+			parts[0] = "无效定位"
+		}
+		if value&2 != 0 {
+			parts[1] = "南纬"
+		}
+		if value&4 != 0 {
+			parts[2] = "西经"
+		}
+		result = append(result, MetricValueMapping{
+			Value:       strconv.Itoa(value),
+			Label:       strings.Join(parts, " · "),
+			Description: "bit0 表示定位有效性，bit1 表示纬度方向，bit2 表示经度方向。",
+		})
+	}
+	return result
+}()
+
+var gb32960FieldReferences = map[string]gb32960FieldReference{
+	"gb32960.vehicle.vehicle_status":   {Label: "车辆状态", Description: "车辆运行、停止等状态编码。", ValueMappings: enumMappings("1", "启动", "车辆处于可行驶启动状态。", "2", "熄火", "车辆处于熄火状态。", "3", "其他", "车辆处于其他状态。", "254", "异常", "协议异常值。", "255", "无效", "协议无效值。")},
+	"gb32960.vehicle.charge_status":    {Label: "充电状态", Description: "车辆充电状态编码。", ValueMappings: enumMappings("1", "停车充电", "车辆停车充电。", "2", "行驶充电", "车辆行驶充电。", "3", "未充电", "车辆未充电。", "4", "充电完成", "车辆充电完成。", "254", "异常", "协议异常值。", "255", "无效", "协议无效值。")},
+	"gb32960.vehicle.running_mode":     {Label: "运行模式", Description: "纯电、混合动力、燃料电池等运行模式编码。", ValueMappings: enumMappings("1", "纯电", "纯电驱动模式。", "2", "混合动力", "混合动力驱动模式。", "3", "燃料电池", "燃料电池驱动模式。", "254", "异常", "协议异常值。", "255", "无效", "协议无效值。")},
+	"gb32960.vehicle.speed_kmh":        {Label: "车速", Unit: "km/h", Description: "车辆当前速度。"},
+	"gb32960.vehicle.total_mileage_km": {Label: "累计里程", Unit: "km", Description: "车辆累计行驶里程。"},
+	"gb32960.vehicle.total_voltage_v":  {Label: "总电压", Unit: "V", Description: "动力系统总电压。"},
+	"gb32960.vehicle.total_current_a":  {Label: "总电流", Unit: "A", Description: "动力系统总电流。"},
+	"gb32960.vehicle.soc_percent":      {Label: "SOC", Unit: "%", Description: "动力电池荷电状态。"},
+	"gb32960.vehicle.dc_dc_status":     {Label: "DC/DC 状态", Description: "DC/DC 工作状态编码。", ValueMappings: enumMappings("1", "工作", "DC/DC 处于工作状态。", "2", "断开", "DC/DC 处于断开状态。", "254", "异常", "协议异常值。", "255", "无效", "协议无效值。")},
+	"gb32960.vehicle.gear":             {Label: "挡位原始值", Description: "挡位、驱动力和制动力组合原始编码。"},
+	"gb32960.vehicle.insulation_kohm":  {Label: "绝缘电阻", Unit: "kΩ", Description: "高压系统绝缘电阻。"},
+	"gb32960.vehicle.accelerator_pct":  {Label: "加速踏板行程", Unit: "%", Description: "2016 版字段，加速踏板开度。"},
+	"gb32960.vehicle.brake_pct":        {Label: "制动踏板状态", Unit: "%", Description: "2016 版字段，制动踏板状态或开度。"},
+
+	"gb32960.drive_motor.serial_no":                {Label: "驱动电机序号", Description: "电机编号。"},
+	"gb32960.drive_motor.state":                    {Label: "驱动电机状态", Description: "电机工作状态编码。", ValueMappings: enumMappings("1", "耗电", "驱动电机耗电。", "2", "发电", "驱动电机发电。", "3", "关闭", "驱动电机关闭。", "4", "准备", "驱动电机准备。", "254", "异常", "协议异常值。", "255", "无效", "协议无效值。")},
+	"gb32960.drive_motor.controller_temperature_c": {Label: "控制器温度", Unit: "℃", Description: "驱动电机控制器温度。"},
+	"gb32960.drive_motor.speed_rpm":                {Label: "转速", Unit: "rpm", Description: "驱动电机转速。"},
+	"gb32960.drive_motor.torque_nm":                {Label: "转矩", Unit: "N·m", Description: "驱动电机输出转矩。"},
+	"gb32960.drive_motor.motor_temperature_c":      {Label: "电机温度", Unit: "℃", Description: "驱动电机温度。"},
+	"gb32960.drive_motor.controller_voltage_v":     {Label: "控制器输入电压", Unit: "V", Description: "电机控制器直流母线输入电压。"},
+	"gb32960.drive_motor.controller_current_a":     {Label: "控制器直流母线电流", Unit: "A", Description: "电机控制器直流母线电流。"},
+
+	"gb32960.fuel_cell.fuel_cell_voltage_v":                 {Label: "燃料电池电压", Unit: "V", Description: "燃料电池系统输出电压。"},
+	"gb32960.fuel_cell.fuel_cell_current_a":                 {Label: "燃料电池电流", Unit: "A", Description: "燃料电池系统输出电流。"},
+	"gb32960.fuel_cell.hydrogen_consumption_kg_per_100km":   {Label: "氢耗", Unit: "kg/100km", Description: "燃料电池氢气消耗率。"},
+	"gb32960.fuel_cell.temperature_probe_values_c":          {Label: "探针温度", Unit: "℃", Description: "燃料电池温度探针列表。"},
+	"gb32960.fuel_cell.max_hydrogen_temperature_c":          {Label: "氢系统最高温度", Unit: "℃", Description: "氢系统最高温度。"},
+	"gb32960.fuel_cell.max_hydrogen_concentration_percent":  {Label: "最高氢浓度", Unit: "%", Description: "氢气浓度最高值。"},
+	"gb32960.fuel_cell.max_hydrogen_pressure_mpa":           {Label: "最高氢压力", Unit: "MPa", Description: "氢系统最高压力。"},
+	"gb32960.fuel_cell.dc_dc_status":                        {Label: "高压 DC/DC 状态", Description: "燃料电池高压 DC/DC 状态。"},
+	"gb32960.fuel_cell.max_hydrogen_temperature_probe_id":   {Label: "最高氢温探针编号", Description: "检测到氢系统最高温度的探针编号。"},
+	"gb32960.fuel_cell.max_hydrogen_concentration_probe_id": {Label: "最高氢浓度探针编号", Description: "检测到最高氢浓度的探针编号。"},
+	"gb32960.fuel_cell.max_hydrogen_pressure_probe_id":      {Label: "最高氢压探针编号", Description: "检测到最高氢压力的探针编号。"},
+
+	"gb32960.position.position_status":   {Label: "定位状态标志", Description: "定位有效性及经纬度方向标志。", ValueMappings: gb32960PositionMappings},
+	"gb32960.position.coordinate_system": {Label: "坐标系", Description: "2025 版新增坐标系编码。", ValueMappings: enumMappings("1", "WGS84", "WGS84 坐标系。", "2", "GCJ-02", "GCJ-02 坐标系。", "3", "其他", "其他坐标系。")},
+	"gb32960.position.longitude":         {Label: "经度", Unit: "°", Description: "车辆经度。"},
+	"gb32960.position.latitude":          {Label: "纬度", Unit: "°", Description: "车辆纬度。"},
+
+	"gb32960.alarm.max_alarm_level":    {Label: "最高报警等级", Description: "当前最高报警等级。", ValueMappings: enumMappings("0", "无故障", "当前无报警故障。", "1", "一级故障", "一级报警故障。", "2", "二级故障", "二级报警故障。", "3", "三级故障", "三级报警故障。")},
+	"gb32960.alarm.general_alarm_flag": {Label: "通用报警标志", Description: "通用报警位图。"},
+	"gb32960.alarm.battery_faults":     {Label: "可充电储能装置故障码", Description: "动力电池相关故障码列表。"},
+	"gb32960.alarm.motor_faults":       {Label: "驱动电机故障码", Description: "驱动电机相关故障码列表。"},
+	"gb32960.alarm.engine_faults":      {Label: "发动机故障码", Description: "发动机相关故障码列表。"},
+	"gb32960.alarm.other_faults":       {Label: "其他故障码", Description: "其他故障码列表。"},
+
+	"gb32960.gd_fc_stack.stack_count":                 {Label: "电堆数量", Description: "本包包含的电堆数量。"},
+	"gb32960.gd_fc_stack.engine_work_state":           {Label: "发动机工作状态", Description: "燃料电池发动机工作状态。"},
+	"gb32960.gd_fc_stack.stack_water_outlet_temp_c":   {Label: "电堆出水温度", Unit: "℃", Description: "电堆冷却水出口温度。"},
+	"gb32960.gd_fc_stack.hydrogen_inlet_pressure_kpa": {Label: "氢气入口压力", Unit: "kPa", Description: "电堆氢气入口压力。"},
+	"gb32960.gd_fc_stack.air_inlet_pressure_kpa":      {Label: "空气入口压力", Unit: "kPa", Description: "电堆空气入口压力。"},
+	"gb32960.gd_fc_stack.air_inlet_temp_c":            {Label: "空气入口温度", Unit: "℃", Description: "电堆空气入口温度。"},
+	"gb32960.gd_fc_stack.max_cell_voltage_v":          {Label: "单体最高电压", Unit: "V", Description: "本电堆单体最高电压。"},
+	"gb32960.gd_fc_stack.min_cell_voltage_v":          {Label: "单体最低电压", Unit: "V", Description: "本电堆单体最低电压。"},
+	"gb32960.gd_fc_stack.avg_cell_voltage_v":          {Label: "单体平均电压", Unit: "V", Description: "本电堆单体平均电压。"},
+	"gb32960.gd_fc_stack.cell_count":                  {Label: "单体总数", Description: "电堆单体总数量。"},
+	"gb32960.gd_fc_stack.frame_cell_start":            {Label: "本帧单体起始序号", Description: "当前分段电压起始单体序号。"},
+	"gb32960.gd_fc_stack.frame_cell_count":            {Label: "本帧单体数量", Description: "当前分段包含的单体数量。"},
+	"gb32960.gd_fc_stack.frame_cell_voltages_v":       {Label: "本帧单体电压列表", Unit: "V", Description: "当前分段的单体电压数组；未跨帧合并时不代表完整电堆快照。"},
+
+	"gb32960.gd_fc_dcdc.input_voltage_v":   {Label: "输入电压", Unit: "V", Description: "DC/DC 输入电压。"},
+	"gb32960.gd_fc_dcdc.input_current_a":   {Label: "输入电流", Unit: "A", Description: "DC/DC 输入电流。"},
+	"gb32960.gd_fc_dcdc.output_voltage_v":  {Label: "输出电压", Unit: "V", Description: "DC/DC 输出电压。"},
+	"gb32960.gd_fc_dcdc.output_current_a":  {Label: "输出电流", Unit: "A", Description: "DC/DC 输出电流。"},
+	"gb32960.gd_fc_dcdc.controller_temp_c": {Label: "控制器温度", Unit: "℃", Description: "DC/DC 控制器温度。"},
+
+	"gb32960.gd_fc_air_conditioner.status":                     {Label: "空调状态", Description: "空调工作状态。", ValueMappings: enumMappings("0", "关闭", "空调关闭。", "1", "启动", "空调启动。", "254", "异常", "协议异常值。", "255", "无效", "协议无效值。")},
+	"gb32960.gd_fc_air_conditioner.power_kw":                   {Label: "空调功率", Unit: "kW", Description: "空调消耗功率。"},
+	"gb32960.gd_fc_air_conditioner.compressor_input_voltage_v": {Label: "压缩机输入电压", Unit: "V", Description: "空调压缩机输入电压。"},
+
+	"gb32960.gd_fc_vehicle_info.collision_alarm":      {Label: "碰撞报警", Description: "碰撞报警状态。", ValueMappings: enumMappings("0", "无碰撞报警", "当前无碰撞报警。", "1", "有碰撞报警", "当前有碰撞报警。", "254", "异常", "协议异常值。", "255", "无效", "协议无效值。")},
+	"gb32960.gd_fc_vehicle_info.ambient_temp_c":       {Label: "环境温度", Unit: "℃", Description: "车辆环境温度。"},
+	"gb32960.gd_fc_vehicle_info.ambient_pressure_kpa": {Label: "环境压力", Unit: "kPa", Description: "车辆环境压力。"},
+	"gb32960.gd_fc_vehicle_info.hydrogen_mass_kg":     {Label: "车载氢量", Unit: "kg", Description: "当前车载氢气质量。"},
+}
+
+func canonicalGB32960ReferenceKey(sourceField string) string {
+	sourceField = strings.ToLower(strings.TrimSpace(sourceField))
+	if !strings.HasPrefix(sourceField, "gb32960.") {
+		return sourceField
+	}
+	if strings.HasPrefix(sourceField, "gb32960.drive_motor.") {
+		return "gb32960.drive_motor." + lastSourcePart(sourceField)
+	}
+	if strings.HasPrefix(sourceField, "gb32960.gd_fc_stack.") {
+		return "gb32960.gd_fc_stack." + lastSourcePart(sourceField)
+	}
+	return sourceField
+}
+
+func lastSourcePart(sourceField string) string {
+	if index := strings.LastIndexByte(sourceField, '.'); index >= 0 && index+1 < len(sourceField) {
+		return sourceField[index+1:]
+	}
+	return sourceField
+}
+
+func gb32960ReferenceForSource(sourceField string) (gb32960FieldReference, bool) {
+	reference, ok := gb32960FieldReferences[canonicalGB32960ReferenceKey(sourceField)]
+	if !ok {
+		return gb32960FieldReference{}, false
+	}
+	reference.ValueMappings = append([]MetricValueMapping(nil), reference.ValueMappings...)
+	return reference, true
+}
+
+func protocolDisplayValue(sourceField string, value any) string {
+	reference, ok := gb32960ReferenceForSource(sourceField)
+	if !ok || len(reference.ValueMappings) == 0 || value == nil {
+		return ""
+	}
+	raw := metricMappingValue(value)
+	for _, mapping := range reference.ValueMappings {
+		if mapping.Value == raw {
+			return fmt.Sprintf("%s（%s）", mapping.Label, raw)
+		}
+	}
+	return fmt.Sprintf("未知状态（%s）", raw)
+}
+
+func metricMappingValue(value any) string {
+	switch typed := value.(type) {
+	case json.Number:
+		return typed.String()
+	case float64:
+		if typed == float64(int64(typed)) {
+			return strconv.FormatInt(int64(typed), 10)
+		}
+		return strconv.FormatFloat(typed, 'f', -1, 64)
+	case float32:
+		return strconv.FormatFloat(float64(typed), 'f', -1, 32)
+	case int:
+		return strconv.Itoa(typed)
+	case int8:
+		return strconv.FormatInt(int64(typed), 10)
+	case int16:
+		return strconv.FormatInt(int64(typed), 10)
+	case int32:
+		return strconv.FormatInt(int64(typed), 10)
+	case int64:
+		return strconv.FormatInt(typed, 10)
+	case uint:
+		return strconv.FormatUint(uint64(typed), 10)
+	case uint8:
+		return strconv.FormatUint(uint64(typed), 10)
+	case uint16:
+		return strconv.FormatUint(uint64(typed), 10)
+	case uint32:
+		return strconv.FormatUint(uint64(typed), 10)
+	case uint64:
+		return strconv.FormatUint(typed, 10)
+	default:
+		return strings.TrimSpace(fmt.Sprint(value))
+	}
+}
+
+func enrichMetricDefinitions(definitions []MetricDefinition) []MetricDefinition {
+	result := make([]MetricDefinition, len(definitions))
+	copy(result, definitions)
+	for index := range result {
+		definition := &result[index]
+		sourceField := definition.SourceFields["GB32960"]
+		reference, ok := gb32960ReferenceForSource(sourceField)
+		if !ok {
+			continue
+		}
+		if len(definition.Protocols) == 1 && strings.EqualFold(definition.Protocols[0], "GB32960") {
+			definition.Label = reference.Label
+			definition.Description = reference.Description
+			definition.Unit = reference.Unit
+		}
+		definition.ValueMappings = reference.ValueMappings
+	}
+	return result
+}
--- a/vehicle-data-platform/apps/api/internal/platform/handler_test.go
+++ b/vehicle-data-platform/apps/api/internal/platform/handler_test.go
@@ -84,13 +84,13 @@ func TestHandlerV2MonitorSummaryAndMap(t *testing.T) {
 	}
 }

-func TestHandlerRejectsInvalidMonitorBounds(t *testing.T) {
+func TestHandlerIgnoresInvalidOptionalMonitorBounds(t *testing.T) {
 	handler := NewHandler(NewService(NewMockStore()))
 	request := httptest.NewRequest(http.MethodGet, "/api/v2/monitor/map?zoom=12&bounds=105,31,103,29", nil)
 	response := httptest.NewRecorder()
 	handler.ServeHTTP(response, request)
-	if response.Code != http.StatusBadRequest || !strings.Contains(response.Body.String(), "MONITOR_BOUNDS_INVALID") {
-		t.Fatalf("unexpected invalid bounds response: status=%d body=%s", response.Code, response.Body.String())
+	if response.Code != http.StatusOK || !strings.Contains(response.Body.String(), `"mode"`) || strings.Contains(response.Body.String(), "MONITOR_BOUNDS_INVALID") {
+		t.Fatalf("optional invalid bounds must degrade to an unbounded map response: status=%d body=%s", response.Code, response.Body.String())
 	}
 }

--- a/vehicle-data-platform/apps/api/internal/platform/mock_store.go
+++ b/vehicle-data-platform/apps/api/internal/platform/mock_store.go
@@ -46,7 +46,7 @@ func NewMockStore() *MockStore {
 		sourceProviders:     map[string]string{},
 		sourcePolicyRemarks: map[string]string{},
 		profiles: map[string]VehicleProfile{
-			"LB9A32A24R0LS1426": {VIN: "LB9A32A24R0LS1426", ModelName: "新能源运营车", VehicleType: "乘用车", CompanyName: "岭牛示范车队", OperationStatus: "active", AccessProvider: "G7", FirstAccessAt: "2026-03-01T08:00:00+08:00", RuntimeSeconds: int64Pointer(1263600), SourceSystem: "manual", Version: 1, UpdatedBy: "demo-admin", UpdatedAt: "2026-07-03T20:12:10+08:00"},
+			"LB9A32A24R0LS1426": {VIN: "LB9A32A24R0LS1426", BrandName: "飞驰", ModelName: "新能源运营车", VehicleType: "乘用车", CompanyName: "岭牛示范车队", OperationStatus: "active", AccessProvider: "G7", FirstAccessAt: "2026-03-01T08:00:00+08:00", RuntimeSeconds: int64Pointer(1263600), SourceSystem: "manual", Version: 1, UpdatedBy: "demo-admin", UpdatedAt: "2026-07-03T20:12:10+08:00"},
 		},
 		locations: []RealtimeLocationRow{
 			{VIN: vehicles[0].VIN, Plate: vehicles[0].Plate, Protocol: vehicles[0].Protocol, Longitude: 113.2644, Latitude: 23.1291, SpeedKmh: 42.5, SOCPercent: 76.2, TotalMileageKm: 48798.9, LastSeen: vehicles[0].LastSeen},
@@ -350,7 +350,7 @@ func (m *MockStore) SaveVehicleProfile(_ context.Context, vin string, input Vehi
 	if exists {
 		version = current.Version + 1
 	}
-	profile := VehicleProfile{VIN: vin, ModelName: input.ModelName, VehicleType: input.VehicleType, CompanyName: input.CompanyName, OperationStatus: input.OperationStatus, AccessProvider: input.AccessProvider, FirstAccessAt: input.FirstAccessAt, RuntimeSeconds: input.RuntimeSeconds, SourceSystem: "manual", Version: version, UpdatedBy: input.Actor, UpdatedAt: time.Now().Format(time.RFC3339)}
+	profile := VehicleProfile{VIN: vin, BrandName: input.BrandName, ModelName: input.ModelName, VehicleType: input.VehicleType, CompanyName: input.CompanyName, OperationStatus: input.OperationStatus, AccessProvider: input.AccessProvider, FirstAccessAt: input.FirstAccessAt, RuntimeSeconds: input.RuntimeSeconds, SourceSystem: "manual", Version: version, UpdatedBy: input.Actor, UpdatedAt: time.Now().Format(time.RFC3339)}
 	m.profiles[vin] = profile
 	return profile, nil
 }
@@ -394,7 +394,7 @@ func (m *MockStore) SyncVehicleProfiles(_ context.Context, request VehicleProfil
 			continue
 		}
 		m.profiles[item.VIN] = VehicleProfile{
-			VIN: item.VIN, ModelName: item.ModelName, VehicleType: item.VehicleType,
+			VIN: item.VIN, BrandName: item.BrandName, ModelName: item.ModelName, VehicleType: item.VehicleType,
 			CompanyName: item.CompanyName, OperationStatus: item.OperationStatus,
 			AccessProvider: item.AccessProvider, FirstAccessAt: item.FirstAccessAt,
 			RuntimeSeconds: item.RuntimeSeconds, SourceSystem: request.SourceSystem,
--- a/vehicle-data-platform/apps/api/internal/platform/model.go
+++ b/vehicle-data-platform/apps/api/internal/platform/model.go
@@ -206,17 +206,24 @@ type MetricCatalog struct {
 }

 type MetricDefinition struct {
-	Key          string            `json:"key"`
-	Label        string            `json:"label"`
-	Description  string            `json:"description"`
-	Unit         string            `json:"unit"`
-	Category     string            `json:"category"`
-	ValueType    string            `json:"valueType"`
-	Protocols    []string          `json:"protocols"`
-	SourceFields map[string]string `json:"sourceFields"`
-	Searchable   bool              `json:"searchable"`
-	Chartable    bool              `json:"chartable"`
-	Alertable    bool              `json:"alertable"`
+	Key           string               `json:"key"`
+	Label         string               `json:"label"`
+	Description   string               `json:"description"`
+	Unit          string               `json:"unit"`
+	Category      string               `json:"category"`
+	ValueType     string               `json:"valueType"`
+	Protocols     []string             `json:"protocols"`
+	SourceFields  map[string]string    `json:"sourceFields"`
+	ValueMappings []MetricValueMapping `json:"valueMappings,omitempty"`
+	Searchable    bool                 `json:"searchable"`
+	Chartable     bool                 `json:"chartable"`
+	Alertable     bool                 `json:"alertable"`
+}
+
+type MetricValueMapping struct {
+	Value       string `json:"value"`
+	Label       string `json:"label"`
+	Description string `json:"description,omitempty"`
 }

 type HistoryDataCategory struct {
@@ -225,12 +232,14 @@ type HistoryDataCategory struct {
 }

 type HistoryMetricDefinition struct {
-	Key            string `json:"key"`
-	Label          string `json:"label"`
-	Unit           string `json:"unit"`
-	Category       string `json:"category"`
-	ValueType      string `json:"valueType"`
-	DefaultVisible bool   `json:"defaultVisible"`
+	Key            string               `json:"key"`
+	Label          string               `json:"label"`
+	Description    string               `json:"description,omitempty"`
+	Unit           string               `json:"unit"`
+	Category       string               `json:"category"`
+	ValueType      string               `json:"valueType"`
+	ValueMappings  []MetricValueMapping `json:"valueMappings,omitempty"`
+	DefaultVisible bool                 `json:"defaultVisible"`
 }

 type HistoryDataResponse struct {
@@ -940,6 +949,7 @@ type VehicleDetail struct {

 type VehicleProfile struct {
 	VIN             string   `json:"vin"`
+	BrandName       string   `json:"brandName"`
 	ModelName       string   `json:"modelName"`
 	VehicleType     string   `json:"vehicleType"`
 	CompanyName     string   `json:"companyName"`
@@ -958,6 +968,7 @@ type VehicleProfile struct {
 }

 type VehicleProfileInput struct {
+	BrandName       string `json:"brandName"`
 	ModelName       string `json:"modelName"`
 	VehicleType     string `json:"vehicleType"`
 	CompanyName     string `json:"companyName"`
@@ -971,6 +982,7 @@ type VehicleProfileInput struct {

 type VehicleProfileSyncItem struct {
 	VIN             string `json:"vin"`
+	BrandName       string `json:"brandName"`
 	ModelName       string `json:"modelName"`
 	VehicleType     string `json:"vehicleType"`
 	CompanyName     string `json:"companyName"`
@@ -1337,6 +1349,7 @@ type LatestTelemetryValue struct {
 	Category         string `json:"category"`
 	ValueType        string `json:"valueType"`
 	Value            any    `json:"value"`
+	DisplayValue     string `json:"displayValue,omitempty"`
 	Protocol         string `json:"protocol"`
 	SourceEndpoint   string `json:"sourceEndpoint,omitempty"`
 	FrameID          string `json:"frameId"`
--- a/vehicle-data-platform/apps/api/internal/platform/production_store.go
+++ b/vehicle-data-platform/apps/api/internal/platform/production_store.go
@@ -7,26 +7,21 @@ import (
 	"net/url"
 	"strconv"
 	"strings"
-	"sync"
 	"time"
 )

 type ProductionStore struct {
-	db                       *sql.DB
-	tdengine                 *sql.DB
-	tdDatabase               string
-	redisOnline              redisOnlineKeyCounter
-	capacityCheck            capacityChecker
-	alertStreamGroup         string
-	alertStreamMode          string
-	accessSchemaOnce         sync.Once
-	accessSchemaErr          error
-	alertSchemaOnce          sync.Once
-	alertSchemaErr           error
-	profileSchemaOnce        sync.Once
-	profileSchemaErr         error
-	reconciliationSchemaOnce sync.Once
-	reconciliationSchemaErr  error
+	db                   *sql.DB
+	tdengine             *sql.DB
+	tdDatabase           string
+	redisOnline          redisOnlineKeyCounter
+	capacityCheck        capacityChecker
+	alertStreamGroup     string
+	alertStreamMode      string
+	accessSchema         schemaReadyGate
+	alertSchema          schemaReadyGate
+	profileSchema        schemaReadyGate
+	reconciliationSchema schemaReadyGate
 }

 type redisOnlineKeyCounter interface {
--- a/vehicle-data-platform/apps/api/internal/platform/profile.go
+++ b/vehicle-data-platform/apps/api/internal/platform/profile.go
@@ -100,6 +100,7 @@ func normalizeVehicleProfileSyncRequest(request VehicleProfileSyncRequest) Vehic
 		item := &request.Items[index]
 		item.VIN = strings.ToUpper(strings.TrimSpace(item.VIN))
 		normalized := normalizeVehicleProfileInput(vehicleProfileSyncInput(*item, request.Actor))
+		item.BrandName = normalized.BrandName
 		item.ModelName = normalized.ModelName
 		item.VehicleType = normalized.VehicleType
 		item.CompanyName = normalized.CompanyName
@@ -149,7 +150,7 @@ func validateVehicleProfileSyncRequest(request VehicleProfileSyncRequest) error

 func vehicleProfileSyncInput(item VehicleProfileSyncItem, actor string) VehicleProfileInput {
 	return VehicleProfileInput{
-		ModelName: item.ModelName, VehicleType: item.VehicleType, CompanyName: item.CompanyName,
+		BrandName: item.BrandName, ModelName: item.ModelName, VehicleType: item.VehicleType, CompanyName: item.CompanyName,
 		OperationStatus: item.OperationStatus, AccessProvider: item.AccessProvider,
 		FirstAccessAt: item.FirstAccessAt, RuntimeSeconds: item.RuntimeSeconds, Actor: actor,
 	}
@@ -172,7 +173,7 @@ func vehicleProfileSyncDecision(current VehicleProfile, exists bool, request Veh
 }

 func vehicleProfileSyncFieldsEqual(current VehicleProfile, item VehicleProfileSyncItem) bool {
-	return current.ModelName == item.ModelName && current.VehicleType == item.VehicleType &&
+	return current.BrandName == item.BrandName && current.ModelName == item.ModelName && current.VehicleType == item.VehicleType &&
 		current.CompanyName == item.CompanyName && current.OperationStatus == item.OperationStatus &&
 		current.AccessProvider == item.AccessProvider && current.FirstAccessAt == item.FirstAccessAt &&
 		equalOptionalInt64(current.RuntimeSeconds, item.RuntimeSeconds)
@@ -221,6 +222,7 @@ func validateProfileVIN(vin string) error {
 }

 func normalizeVehicleProfileInput(input VehicleProfileInput) VehicleProfileInput {
+	input.BrandName = strings.TrimSpace(input.BrandName)
 	input.ModelName = strings.TrimSpace(input.ModelName)
 	input.VehicleType = strings.TrimSpace(input.VehicleType)
 	input.CompanyName = strings.TrimSpace(input.CompanyName)
@@ -240,7 +242,7 @@ func validateVehicleProfileInput(input VehicleProfileInput) error {
 		max   int
 		name  string
 	}{
-		{input.ModelName, 128, "车型"}, {input.VehicleType, 64, "车辆类型"},
+		{input.BrandName, 128, "品牌"}, {input.ModelName, 128, "车型"}, {input.VehicleType, 64, "车辆类型"},
 		{input.CompanyName, 128, "所属企业"}, {input.AccessProvider, 128, "接入服务商"},
 	}
 	for _, field := range lengths {
@@ -278,7 +280,10 @@ func parseVehicleProfileTime(value string) (time.Time, error) {
 }

 func decorateVehicleProfile(profile VehicleProfile) VehicleProfile {
-	missing := make([]string, 0, 7)
+	missing := make([]string, 0, 8)
+	if profile.BrandName == "" {
+		missing = append(missing, "brandName")
+	}
 	if profile.ModelName == "" {
 		missing = append(missing, "modelName")
 	}
@@ -301,7 +306,7 @@ func decorateVehicleProfile(profile VehicleProfile) VehicleProfile {
 		missing = append(missing, "runtimeSeconds")
 	}
 	profile.MissingFields = missing
-	profile.Completeness = (7 - len(missing)) * 100 / 7
+	profile.Completeness = (8 - len(missing)) * 100 / 8
 	if profile.OperationStatus == "" {
 		profile.OperationStatus = "unknown"
 	}
--- a/vehicle-data-platform/apps/api/internal/platform/profile_store.go
+++ b/vehicle-data-platform/apps/api/internal/platform/profile_store.go
@@ -8,17 +8,19 @@ import (
 	"time"
 )

-const vehicleProfileSelect = `SELECT vin,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by,updated_at FROM vehicle_profile `
+const vehicleProfileSelect = `SELECT vin,brand_name,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by,updated_at FROM vehicle_profile `

 func (s *ProductionStore) ensureProfileSchema(ctx context.Context) error {
-	s.profileSchemaOnce.Do(func() {
+	return s.profileSchema.ensure(func() error {
 		var present int
-		s.profileSchemaErr = s.db.QueryRowContext(ctx, `SELECT COUNT(*) FROM information_schema.tables WHERE table_schema=DATABASE() AND table_name IN ('vehicle_profile','vehicle_profile_audit')`).Scan(&present)
-		if s.profileSchemaErr == nil && present != 2 {
-			s.profileSchemaErr = sql.ErrNoRows
+		if err := s.db.QueryRowContext(ctx, `SELECT COUNT(*) FROM information_schema.tables WHERE table_schema=DATABASE() AND table_name IN ('vehicle_profile','vehicle_profile_audit')`).Scan(&present); err != nil {
+			return err
 		}
+		if present != 2 {
+			return sql.ErrNoRows
+		}
+		return nil
 	})
-	return s.profileSchemaErr
 }

 func (s *ProductionStore) VehicleProfile(ctx context.Context, vin string) (VehicleProfile, bool, error) {
@@ -48,7 +50,7 @@ func (s *ProductionStore) SaveVehicleProfile(ctx context.Context, vin string, in
 		if input.Version != 0 {
 			return VehicleProfile{}, clientError{Code: "VEHICLE_PROFILE_NOT_FOUND", Message: "待更新车辆档案不存在"}
 		}
-		_, err = tx.ExecContext(ctx, `INSERT INTO vehicle_profile(vin,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by) VALUES(?,?,?,?,?,?,?,?, 'manual','',NULL,1,?)`, vin, input.ModelName, input.VehicleType, input.CompanyName, input.OperationStatus, input.AccessProvider, firstAccess, input.RuntimeSeconds, input.Actor)
+		_, err = tx.ExecContext(ctx, `INSERT INTO vehicle_profile(vin,brand_name,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by) VALUES(?,?,?,?,?,?,?,?,?, 'manual','',NULL,1,?)`, vin, input.BrandName, input.ModelName, input.VehicleType, input.CompanyName, input.OperationStatus, input.AccessProvider, firstAccess, input.RuntimeSeconds, input.Actor)
 		current = 0
 	} else if err != nil {
 		return VehicleProfile{}, err
@@ -56,7 +58,7 @@ func (s *ProductionStore) SaveVehicleProfile(ctx context.Context, vin string, in
 		if input.Version != current {
 			return VehicleProfile{}, clientError{Code: "VEHICLE_PROFILE_VERSION_CONFLICT", Message: "车辆档案已被其他用户更新，请刷新后重试"}
 		}
-		result, updateErr := tx.ExecContext(ctx, `UPDATE vehicle_profile SET model_name=?,vehicle_type=?,company_name=?,operation_status=?,access_provider=?,first_access_at=?,runtime_seconds=?,source_system='manual',source_version='',synced_at=NULL,version=version+1,updated_by=? WHERE vin=? AND version=?`, input.ModelName, input.VehicleType, input.CompanyName, input.OperationStatus, input.AccessProvider, firstAccess, input.RuntimeSeconds, input.Actor, vin, current)
+		result, updateErr := tx.ExecContext(ctx, `UPDATE vehicle_profile SET brand_name=?,model_name=?,vehicle_type=?,company_name=?,operation_status=?,access_provider=?,first_access_at=?,runtime_seconds=?,source_system='manual',source_version='',synced_at=NULL,version=version+1,updated_by=? WHERE vin=? AND version=?`, input.BrandName, input.ModelName, input.VehicleType, input.CompanyName, input.OperationStatus, input.AccessProvider, firstAccess, input.RuntimeSeconds, input.Actor, vin, current)
 		err = updateErr
 		if err == nil {
 			rows, _ := result.RowsAffected()
@@ -154,10 +156,10 @@ func (s *ProductionStore) SyncVehicleProfiles(ctx context.Context, request Vehic

 		firstAccess := nullableVehicleProfileTime(item.FirstAccessAt)
 		if itemResult.Status == profileSyncCreated {
-			_, err = tx.ExecContext(ctx, `INSERT INTO vehicle_profile(vin,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by) VALUES(?,?,?,?,?,?,?,?,?,?,?,1,?)`, item.VIN, item.ModelName, item.VehicleType, item.CompanyName, item.OperationStatus, item.AccessProvider, firstAccess, item.RuntimeSeconds, request.SourceSystem, request.SourceVersion, syncedAt, request.Actor)
+			_, err = tx.ExecContext(ctx, `INSERT INTO vehicle_profile(vin,brand_name,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,1,?)`, item.VIN, item.BrandName, item.ModelName, item.VehicleType, item.CompanyName, item.OperationStatus, item.AccessProvider, firstAccess, item.RuntimeSeconds, request.SourceSystem, request.SourceVersion, syncedAt, request.Actor)
 		} else {
 			var updateResult sql.Result
-			updateResult, err = tx.ExecContext(ctx, `UPDATE vehicle_profile SET model_name=?,vehicle_type=?,company_name=?,operation_status=?,access_provider=?,first_access_at=?,runtime_seconds=?,source_system=?,source_version=?,synced_at=?,version=version+1,updated_by=? WHERE vin=? AND version=?`, item.ModelName, item.VehicleType, item.CompanyName, item.OperationStatus, item.AccessProvider, firstAccess, item.RuntimeSeconds, request.SourceSystem, request.SourceVersion, syncedAt, request.Actor, item.VIN, current.Version)
+			updateResult, err = tx.ExecContext(ctx, `UPDATE vehicle_profile SET brand_name=?,model_name=?,vehicle_type=?,company_name=?,operation_status=?,access_provider=?,first_access_at=?,runtime_seconds=?,source_system=?,source_version=?,synced_at=?,version=version+1,updated_by=? WHERE vin=? AND version=?`, item.BrandName, item.ModelName, item.VehicleType, item.CompanyName, item.OperationStatus, item.AccessProvider, firstAccess, item.RuntimeSeconds, request.SourceSystem, request.SourceVersion, syncedAt, request.Actor, item.VIN, current.Version)
 			if err == nil {
 				rowsAffected, rowsErr := updateResult.RowsAffected()
 				if rowsErr != nil {
@@ -207,7 +209,7 @@ func scanVehicleProfile(scanner vehicleProfileScanner) (VehicleProfile, error) {
 	var firstAccess, syncedAt sql.NullTime
 	var runtime sql.NullInt64
 	var updatedAt time.Time
-	err := scanner.Scan(&profile.VIN, &profile.ModelName, &profile.VehicleType, &profile.CompanyName, &profile.OperationStatus, &profile.AccessProvider, &firstAccess, &runtime, &profile.SourceSystem, &profile.SourceVersion, &syncedAt, &profile.Version, &profile.UpdatedBy, &updatedAt)
+	err := scanner.Scan(&profile.VIN, &profile.BrandName, &profile.ModelName, &profile.VehicleType, &profile.CompanyName, &profile.OperationStatus, &profile.AccessProvider, &firstAccess, &runtime, &profile.SourceSystem, &profile.SourceVersion, &syncedAt, &profile.Version, &profile.UpdatedBy, &updatedAt)
 	if err != nil {
 		return VehicleProfile{}, err
 	}
--- a/vehicle-data-platform/apps/api/internal/platform/profile_test.go
+++ b/vehicle-data-platform/apps/api/internal/platform/profile_test.go
@@ -26,7 +26,7 @@ func TestVehicleProfileReturnsCompletenessAndMissingFields(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if empty.Version != 0 || empty.Completeness != 0 || len(empty.MissingFields) != 7 {
+	if empty.Version != 0 || empty.Completeness != 0 || len(empty.MissingFields) != 8 {
 		t.Fatalf("expected explicit empty profile, got %+v", empty)
 	}
 }
@@ -34,7 +34,7 @@ func TestVehicleProfileReturnsCompletenessAndMissingFields(t *testing.T) {
 func TestSaveVehicleProfileCreatesAndUsesOptimisticVersion(t *testing.T) {
 	service := NewService(NewMockStore())
 	runtime := int64(3600)
-	input := VehicleProfileInput{ModelName: "氢燃料重卡", VehicleType: "重卡", CompanyName: "示范物流", OperationStatus: "active", AccessProvider: "车厂平台", FirstAccessAt: "2026-07-01T08:30:00+08:00", RuntimeSeconds: &runtime, Actor: "admin-a"}
+	input := VehicleProfileInput{BrandName: "现代", ModelName: "氢燃料重卡", VehicleType: "重卡", CompanyName: "示范物流", OperationStatus: "active", AccessProvider: "车厂平台", FirstAccessAt: "2026-07-01T08:30:00+08:00", RuntimeSeconds: &runtime, Actor: "admin-a"}
 	profile, err := service.SaveVehicleProfile(context.Background(), "LNXNEGRR7SR318212", input)
 	if err != nil {
 		t.Fatal(err)
@@ -174,7 +174,7 @@ func TestVehicleProfileHandlersReadAndUpdate(t *testing.T) {
 		t.Fatalf("empty profile read status=%d body=%s", read.Code, read.Body.String())
 	}
 	update := httptest.NewRecorder()
-	body := bytes.NewBufferString(`{"modelName":"氢燃料重卡","vehicleType":"重卡","companyName":"示范物流","operationStatus":"active","accessProvider":"车厂平台","firstAccessAt":"2026-07-01T08:30","runtimeSeconds":3600,"version":0}`)
+	body := bytes.NewBufferString(`{"brandName":"现代","modelName":"氢燃料重卡","vehicleType":"重卡","companyName":"示范物流","operationStatus":"active","accessProvider":"车厂平台","firstAccessAt":"2026-07-01T08:30","runtimeSeconds":3600,"version":0}`)
 	handler.ServeHTTP(update, httptest.NewRequest(http.MethodPut, "/api/v2/vehicles/LNXNEGRR7SR318212/profile", body))
 	if update.Code != http.StatusOK {
 		t.Fatalf("profile update status=%d body=%s", update.Code, update.Body.String())
@@ -216,12 +216,12 @@ func TestProductionVehicleProfileCreateIsTransactionalAndAudited(t *testing.T) {
 	mock.ExpectQuery(regexp.QuoteMeta(`SELECT COUNT(*) FROM information_schema.tables WHERE table_schema=DATABASE() AND table_name IN ('vehicle_profile','vehicle_profile_audit')`)).WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(2))
 	mock.ExpectBegin()
 	mock.ExpectQuery(regexp.QuoteMeta(`SELECT version FROM vehicle_profile WHERE vin=? FOR UPDATE`)).WithArgs("VIN001").WillReturnRows(sqlmock.NewRows([]string{"version"}))
-	mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO vehicle_profile(vin,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by) VALUES(?,?,?,?,?,?,?,?, 'manual','',NULL,1,?)`)).WithArgs("VIN001", "示范车型", "重卡", "示范物流", "active", "车厂平台", sqlmock.AnyArg(), runtime, "admin-a").WillReturnResult(sqlmock.NewResult(1, 1))
+	mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO vehicle_profile(vin,brand_name,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by) VALUES(?,?,?,?,?,?,?,?,?, 'manual','',NULL,1,?)`)).WithArgs("VIN001", "现代", "示范车型", "重卡", "示范物流", "active", "车厂平台", sqlmock.AnyArg(), runtime, "admin-a").WillReturnResult(sqlmock.NewResult(1, 1))
 	mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO vehicle_profile_audit(vin,profile_version,actor,action,snapshot_json) VALUES(?,?,?,?,?)`)).WithArgs("VIN001", 1, "admin-a", "create", sqlmock.AnyArg()).WillReturnResult(sqlmock.NewResult(1, 1))
 	mock.ExpectCommit()
-	columns := []string{"vin", "model_name", "vehicle_type", "company_name", "operation_status", "access_provider", "first_access_at", "runtime_seconds", "source_system", "source_version", "synced_at", "version", "updated_by", "updated_at"}
-	mock.ExpectQuery(regexp.QuoteMeta(vehicleProfileSelect + `WHERE vin=?`)).WithArgs("VIN001").WillReturnRows(sqlmock.NewRows(columns).AddRow("VIN001", "示范车型", "重卡", "示范物流", "active", "车厂平台", now, runtime, "manual", "", nil, 1, "admin-a", now))
-	profile, err := store.SaveVehicleProfile(context.Background(), "VIN001", VehicleProfileInput{ModelName: "示范车型", VehicleType: "重卡", CompanyName: "示范物流", OperationStatus: "active", AccessProvider: "车厂平台", FirstAccessAt: now.Format(time.RFC3339), RuntimeSeconds: &runtime, Actor: "admin-a"})
+	columns := []string{"vin", "brand_name", "model_name", "vehicle_type", "company_name", "operation_status", "access_provider", "first_access_at", "runtime_seconds", "source_system", "source_version", "synced_at", "version", "updated_by", "updated_at"}
+	mock.ExpectQuery(regexp.QuoteMeta(vehicleProfileSelect + `WHERE vin=?`)).WithArgs("VIN001").WillReturnRows(sqlmock.NewRows(columns).AddRow("VIN001", "现代", "示范车型", "重卡", "示范物流", "active", "车厂平台", now, runtime, "manual", "", nil, 1, "admin-a", now))
+	profile, err := store.SaveVehicleProfile(context.Background(), "VIN001", VehicleProfileInput{BrandName: "现代", ModelName: "示范车型", VehicleType: "重卡", CompanyName: "示范物流", OperationStatus: "active", AccessProvider: "车厂平台", FirstAccessAt: now.Format(time.RFC3339), RuntimeSeconds: &runtime, Actor: "admin-a"})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -243,13 +243,13 @@ func TestProductionVehicleProfileSyncCreatesAndAuditsInOneTransaction(t *testing
 	runtime := int64(3600)
 	request := VehicleProfileSyncRequest{
 		SourceSystem: "oem-tsp", SourceVersion: "snapshot-1", Actor: "sync-admin",
-		Items: []VehicleProfileSyncItem{{VIN: "VIN001", ModelName: "示范车型", VehicleType: "重卡", CompanyName: "示范物流", OperationStatus: "active", AccessProvider: "车厂平台", FirstAccessAt: "2026-07-01T08:30:00+08:00", RuntimeSeconds: &runtime}},
+		Items: []VehicleProfileSyncItem{{VIN: "VIN001", BrandName: "现代", ModelName: "示范车型", VehicleType: "重卡", CompanyName: "示范物流", OperationStatus: "active", AccessProvider: "车厂平台", FirstAccessAt: "2026-07-01T08:30:00+08:00", RuntimeSeconds: &runtime}},
 	}
 	mock.ExpectQuery(regexp.QuoteMeta(`SELECT COUNT(*) FROM information_schema.tables WHERE table_schema=DATABASE() AND table_name IN ('vehicle_profile','vehicle_profile_audit')`)).WillReturnRows(sqlmock.NewRows([]string{"count"}).AddRow(2))
 	mock.ExpectBegin()
 	mock.ExpectQuery(regexp.QuoteMeta(`SELECT DISTINCT vin FROM vehicle_identity_binding WHERE vin IN (?)`)).WithArgs("VIN001").WillReturnRows(sqlmock.NewRows([]string{"vin"}).AddRow("VIN001"))
-	mock.ExpectQuery(regexp.QuoteMeta(vehicleProfileSelect + `WHERE vin=? FOR UPDATE`)).WithArgs("VIN001").WillReturnRows(sqlmock.NewRows([]string{"vin", "model_name", "vehicle_type", "company_name", "operation_status", "access_provider", "first_access_at", "runtime_seconds", "source_system", "source_version", "synced_at", "version", "updated_by", "updated_at"}))
-	mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO vehicle_profile(vin,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by) VALUES(?,?,?,?,?,?,?,?,?,?,?,1,?)`)).WithArgs("VIN001", "示范车型", "重卡", "示范物流", "active", "车厂平台", sqlmock.AnyArg(), runtime, "oem-tsp", "snapshot-1", sqlmock.AnyArg(), "sync-admin").WillReturnResult(sqlmock.NewResult(1, 1))
+	mock.ExpectQuery(regexp.QuoteMeta(vehicleProfileSelect + `WHERE vin=? FOR UPDATE`)).WithArgs("VIN001").WillReturnRows(sqlmock.NewRows([]string{"vin", "brand_name", "model_name", "vehicle_type", "company_name", "operation_status", "access_provider", "first_access_at", "runtime_seconds", "source_system", "source_version", "synced_at", "version", "updated_by", "updated_at"}))
+	mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO vehicle_profile(vin,brand_name,model_name,vehicle_type,company_name,operation_status,access_provider,first_access_at,runtime_seconds,source_system,source_version,synced_at,version,updated_by) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,1,?)`)).WithArgs("VIN001", "现代", "示范车型", "重卡", "示范物流", "active", "车厂平台", sqlmock.AnyArg(), runtime, "oem-tsp", "snapshot-1", sqlmock.AnyArg(), "sync-admin").WillReturnResult(sqlmock.NewResult(1, 1))
 	mock.ExpectExec(regexp.QuoteMeta(`INSERT INTO vehicle_profile_audit(vin,profile_version,actor,action,snapshot_json) VALUES(?,?,?,?,?)`)).WithArgs("VIN001", 1, "sync-admin", "sync_created", sqlmock.AnyArg()).WillReturnResult(sqlmock.NewResult(1, 1))
 	mock.ExpectCommit()
 	result, err := store.SyncVehicleProfiles(context.Background(), request)
--- a/vehicle-data-platform/apps/api/internal/platform/reconciliation_store.go
+++ b/vehicle-data-platform/apps/api/internal/platform/reconciliation_store.go
@@ -42,18 +42,17 @@ type reconciliationExisting struct {
 }

 func (s *ProductionStore) ensureReconciliationSchema(ctx context.Context) error {
-	s.reconciliationSchemaOnce.Do(func() {
+	return s.reconciliationSchema.ensure(func() error {
 		var count int
 		if err := s.db.QueryRowContext(ctx, `SELECT COUNT(*) FROM information_schema.tables
 WHERE table_schema=DATABASE() AND table_name IN ('vehicle_reconciliation_run','vehicle_reconciliation_issue','vehicle_reconciliation_action')`).Scan(&count); err != nil {
-			s.reconciliationSchemaErr = err
-			return
+			return err
 		}
 		if count != 3 {
-			s.reconciliationSchemaErr = fmt.Errorf("reconciliation schema unavailable; apply deploy/migrations/017_reconciliation_center.sql")
+			return fmt.Errorf("reconciliation schema unavailable; apply deploy/migrations/017_reconciliation_center.sql")
 		}
+		return nil
 	})
-	return s.reconciliationSchemaErr
 }

 func (s *ProductionStore) EvaluateReconciliation(ctx context.Context) (ReconciliationEvaluationResult, error) {
--- a/vehicle-data-platform/apps/api/internal/platform/schema_gate.go
+++ b/vehicle-data-platform/apps/api/internal/platform/schema_gate.go
@@ -0,0 +1,23 @@
+package platform
+
+import "sync"
+
+// schemaReadyGate serializes schema probes and caches only a successful result.
+// Request cancellation and transient database failures must remain retryable.
+type schemaReadyGate struct {
+	mu    sync.Mutex
+	ready bool
+}
+
+func (gate *schemaReadyGate) ensure(check func() error) error {
+	gate.mu.Lock()
+	defer gate.mu.Unlock()
+	if gate.ready {
+		return nil
+	}
+	if err := check(); err != nil {
+		return err
+	}
+	gate.ready = true
+	return nil
+}
--- a/vehicle-data-platform/apps/api/internal/platform/service.go
+++ b/vehicle-data-platform/apps/api/internal/platform/service.go
@@ -608,9 +608,13 @@ func buildMonitorMapResponse(vehicles Page[VehicleRealtimeRow], query url.Values
 		zoom = 20
 	}
 	provinceMode := zoom <= monitorProvinceMaxZoom
-	bounds, hasBounds, err := parseMonitorBounds(query.Get("bounds"))
-	if err != nil {
-		return MonitorMapResponse{}, err
+	bounds, hasBounds, boundsErr := parseMonitorBounds(query.Get("bounds"))
+	if boundsErr != nil {
+		// The viewport is an optional performance hint. Wide, wrapped or
+		// intermediate map frames can briefly exceed WGS-84 bounds; falling
+		// back to the bounded unfiltered response keeps the map usable.
+		bounds = monitorBounds{}
+		hasBounds = false
 	}
 	result := MonitorMapResponse{
 		Mode:           "clusters",
@@ -1602,6 +1606,63 @@ func (s *Service) HistoryLocations(ctx context.Context, query url.Values) (Page[
 	return s.store.HistoryLocationsFromTDengine(ctx, resolvedQuery)
 }

+type trackSourceCandidate struct {
+	Protocol string
+	Page     Page[HistoryLocationRow]
+	Raw      []HistoryLocationRow
+	Clean    []HistoryLocationRow
+	Quality  TrackQuality
+}
+
+var trackCandidateProtocols = []string{"GB32960", "JT808", "YUTONG_MQTT"}
+
+func cloneURLValues(values url.Values) url.Values {
+	next := make(url.Values, len(values))
+	for key, items := range values {
+		next[key] = append([]string(nil), items...)
+	}
+	return next
+}
+
+func sortedHistoryLocations(items []HistoryLocationRow) []HistoryLocationRow {
+	points := append([]HistoryLocationRow(nil), items...)
+	sort.SliceStable(points, func(i, j int) bool {
+		left, leftOK := parseVehicleServiceTime(points[i].DeviceTime)
+		right, rightOK := parseVehicleServiceTime(points[j].DeviceTime)
+		if leftOK && rightOK && !left.Equal(right) {
+			return left.Before(right)
+		}
+		return points[i].DeviceTime < points[j].DeviceTime
+	})
+	return points
+}
+
+func (s *Service) trackSourceCandidates(ctx context.Context, query url.Values, requestedProtocol string) ([]trackSourceCandidate, error) {
+	protocols := trackCandidateProtocols
+	if requestedProtocol != "" {
+		protocols = []string{requestedProtocol}
+	}
+	candidates := make([]trackSourceCandidate, 0, len(protocols))
+	for _, protocol := range protocols {
+		sourceQuery := cloneURLValues(query)
+		sourceQuery.Set("protocol", protocol)
+		page, err := s.store.HistoryLocationsFromTDengine(ctx, sourceQuery)
+		if err != nil {
+			return nil, err
+		}
+		raw := sortedHistoryLocations(page.Items)
+		clean, quality := analyzeTrackPoints(raw)
+		candidates = append(candidates, trackSourceCandidate{
+			Protocol: protocol,
+			Page:     page,
+			Raw:      raw,
+			Clean:    clean,
+			Quality:  quality,
+		})
+	}
+	return candidates, nil
+}
+
 func (s *Service) TrackPlayback(ctx context.Context, query url.Values) (TrackPlaybackResponse, error) {
 	keyword := strings.TrimSpace(firstNonEmpty(query.Get("keyword"), query.Get("vin")))
 	if keyword == "" {
@@ -1627,37 +1688,41 @@ func (s *Service) TrackPlayback(ctx context.Context, query url.Values) (TrackPla
 	}
 	resolvedQuery.Set("limit", "5000")
 	resolvedQuery.Set("offset", "0")
-	page, err := s.store.HistoryLocationsFromTDengine(ctx, resolvedQuery)
+	requestedProtocol := strings.ToUpper(strings.TrimSpace(query.Get("protocol")))
+	candidates, err := s.trackSourceCandidates(ctx, resolvedQuery, requestedProtocol)
 	if err != nil {
 		return TrackPlaybackResponse{}, err
 	}
-	rawPoints := append([]HistoryLocationRow(nil), page.Items...)
-	sort.SliceStable(rawPoints, func(i, j int) bool {
-		left, leftOK := parseVehicleServiceTime(rawPoints[i].DeviceTime)
-		right, rightOK := parseVehicleServiceTime(rawPoints[j].DeviceTime)
-		if leftOK && rightOK && !left.Equal(right) {
-			return left.Before(right)
+	allCleanPoints := make([]HistoryLocationRow, 0)
+	for _, candidate := range candidates {
+		allCleanPoints = append(allCleanPoints, candidate.Clean...)
+	}
+	points, selectedProtocol, alternateSourcePoints := selectTrackPrimarySource(allCleanPoints, requestedProtocol)
+	selected := trackSourceCandidate{Protocol: selectedProtocol, Clean: []HistoryLocationRow{}}
+	for _, candidate := range candidates {
+		if strings.EqualFold(candidate.Protocol, selectedProtocol) {
+			selected = candidate
+			break
 		}
-		return rawPoints[i].DeviceTime < rawPoints[j].DeviceTime
-	})
-	cleanPoints, quality := analyzeTrackPoints(rawPoints)
-	points, selectedProtocol, alternateSourcePoints := selectTrackPrimarySource(cleanPoints, query.Get("protocol"))
+	}
+	quality := selected.Quality
 	quality.SelectedProtocol = selectedProtocol
 	quality.AlternateSourcePoints = alternateSourcePoints
 	quality.ValidPoints = len(points)
 	applyTrackSequenceQuality(points, &quality)
+	truncated := selected.Page.Total > len(selected.Raw)
 	result := TrackPlaybackResponse{
 		Points:    []HistoryLocationRow{},
 		Events:    []TrackPlaybackEvent{},
-		Sources:   summarizeTrackSources(cleanPoints),
+		Sources:   summarizeTrackSources(allCleanPoints),
 		Segments:  []TrackSegment{},
 		Stops:     []TrackStop{},
-		Total:     page.Total,
-		Truncated: page.Total > len(rawPoints),
+		Total:     selected.Page.Total,
+		Truncated: truncated,
 		Quality:   quality,
 		AsOf:      time.Now().UTC().Format(time.RFC3339),
 	}
-	result.Coverage = trackCoverage(resolvedQuery, page.Total, len(rawPoints), len(points), 0, result.Truncated, false)
+	result.Coverage = trackCoverage(resolvedQuery, selected.Page.Total, len(selected.Raw), len(points), 0, result.Truncated, false)
 	applyTrackPrimarySourceCoverage(&result.Coverage, selectedProtocol, alternateSourcePoints)
 	if len(points) == 0 {
 		return result, nil
@@ -1696,7 +1761,7 @@ func (s *Service) TrackPlayback(ctx context.Context, query url.Values) (TrackPla
 	for index := range result.Stops {
 		result.Stops[index].SampledIndex = nearestSampledIndex((result.Stops[index].startIndex+result.Stops[index].endIndex)/2, sampledIndexes)
 	}
-	result.Coverage = trackCoverage(resolvedQuery, page.Total, len(rawPoints), len(points), len(result.Points), result.Truncated, result.Sampled)
+	result.Coverage = trackCoverage(resolvedQuery, selected.Page.Total, len(selected.Raw), len(points), len(result.Points), result.Truncated, result.Sampled)
 	applyTrackPrimarySourceCoverage(&result.Coverage, selectedProtocol, alternateSourcePoints)
 	result.Coverage.ActualStart = result.Summary.StartTime
 	result.Coverage.ActualEnd = result.Summary.EndTime
@@ -1755,9 +1820,13 @@ type metricCatalogStore interface {

 func (s *Service) metricDefinitions(ctx context.Context) ([]MetricDefinition, error) {
 	if store, ok := s.store.(metricCatalogStore); ok {
-		return store.MetricDefinitions(ctx)
+		definitions, err := store.MetricDefinitions(ctx)
+		if err != nil {
+			return nil, err
+		}
+		return enrichMetricDefinitions(definitions), nil
 	}
-	return metricDefinitions(), nil
+	return enrichMetricDefinitions(metricDefinitions()), nil
 }

 func (s *Service) MetricCatalog(ctx context.Context) (MetricCatalog, error) {
@@ -1865,7 +1934,8 @@ func buildLatestTelemetryResponse(vehicleKey string, frames []RawFrameRow, defin
 			if unified {
 				key = definition.Key
 			}
-			if previous, exists := candidates[key]; exists && (!observedOK || (previous.timeValid && !observed.After(previous.sortTime))) {
+			candidateKey := normalizedProtocol + "\x00" + key
+			if previous, exists := candidates[candidateKey]; exists && (!observedOK || (previous.timeValid && !observed.After(previous.sortTime))) {
 				continue
 			}
 			label, unit := latestTelemetryRawMetadata(sourceField)
@@ -1873,6 +1943,11 @@ func buildLatestTelemetryResponse(vehicleKey string, frames []RawFrameRow, defin
 			valueType := "dynamic"
 			description := ""
 			value := rawValue
+			if reference, ok := gb32960ReferenceForSource(sourceField); ok {
+				label = reference.Label
+				unit = reference.Unit
+				description = reference.Description
+			}
 			if unified {
 				label = definition.Label
 				unit = definition.Unit
@@ -1880,11 +1955,18 @@ func buildLatestTelemetryResponse(vehicleKey string, frames []RawFrameRow, defin
 				valueType = definition.ValueType
 				description = definition.Description
 				value = normalizeTelemetryValue(rawValue, definition.ValueType)
+				if reference, ok := gb32960ReferenceForSource(sourceField); ok {
+					label = reference.Label
+					unit = reference.Unit
+					description = reference.Description
+				}
+				label, description = protocolTelemetryMetadata(normalizedProtocol, key, label, description)
 			}
-			candidates[key] = latestTelemetryCandidate{
+			displayValue := protocolDisplayValue(sourceField, value)
+			candidates[candidateKey] = latestTelemetryCandidate{
 				value: LatestTelemetryValue{
 					Key: key, SourceField: sourceField, Label: label, Description: description, Unit: unit,
-					Category: category, ValueType: valueType, Value: value, Protocol: normalizedProtocol,
+					Category: category, ValueType: valueType, Value: value, DisplayValue: displayValue, Protocol: normalizedProtocol,
 					SourceEndpoint: frame.SourceEndpoint, FrameID: frame.ID, DeviceTime: frame.DeviceTime, ServerTime: frame.ServerTime,
 					Quality: quality, QualityReason: qualityReason, FreshnessSeconds: freshness, DataDelaySeconds: delay,
 				},
@@ -1896,6 +1978,9 @@ func buildLatestTelemetryResponse(vehicleKey string, frames []RawFrameRow, defin
 		response.Values = append(response.Values, candidate.value)
 	}
 	sort.Slice(response.Values, func(i, j int) bool {
+		if left, right := telemetryProtocolRank(response.Values[i].Protocol), telemetryProtocolRank(response.Values[j].Protocol); left != right {
+			return left < right
+		}
 		left, right := telemetryCategoryRank(response.Values[i].Category), telemetryCategoryRank(response.Values[j].Category)
 		if left != right {
 			return left < right
@@ -1915,10 +2000,24 @@ func buildLatestTelemetryResponse(vehicleKey string, frames []RawFrameRow, defin
 		}
 		response.Categories[index].Count++
 	}
-	response.Evidence = fmt.Sprintf("scanned %d newest RAW frames; selected %d newest scalar values by unified metric/source field", len(frames), len(response.Values))
+	response.Evidence = fmt.Sprintf("scanned %d newest RAW frames; retained %d newest scalar values independently by protocol and metric/source field", len(frames), len(response.Values))
 	return response
 }

+func protocolTelemetryMetadata(protocol, key, label, description string) (string, string) {
+	if key != "total_mileage_km" {
+		return label, description
+	}
+	switch protocol {
+	case "JT808":
+		return "GPS 总里程", "JT/T 808 定位终端累计的 GPS 里程，不等同于车辆仪表盘里程"
+	case "GB32960", "YUTONG_MQTT":
+		return "仪表盘总里程", "车辆总线或车厂平台上报的仪表盘累计里程"
+	default:
+		return label, description
+	}
+}
+
 func telemetrySourceLookupKey(protocol, sourceField string) string {
 	return strings.ToUpper(strings.TrimSpace(protocol)) + "\x00" + strings.TrimSpace(sourceField)
 }
@@ -2036,6 +2135,10 @@ func normalizeTelemetryCategory(category string) string {
 		return "location"
 	case "quality":
 		return "quality"
+	case "fuel-cell", "fuel_cell", "fuelcell", "hydrogen":
+		return "fuel-cell"
+	case "motor", "engine":
+		return "motor"
 	default:
 		return "extension"
 	}
@@ -2046,7 +2149,7 @@ func telemetrySourceCategory(sourceField string) string {
 	switch {
 	case strings.Contains(normalized, "alarm") || strings.Contains(normalized, "fault") || strings.Contains(normalized, "warning"):
 		return "alarm"
-	case strings.Contains(normalized, "fuel_cell") || strings.Contains(normalized, "fuelcell") || strings.Contains(normalized, "fc_stack"):
+	case strings.Contains(normalized, "fuel_cell") || strings.Contains(normalized, "fuelcell") || strings.Contains(normalized, "fc_stack") || strings.Contains(normalized, "hydrogen"):
 		return "fuel-cell"
 	case strings.Contains(normalized, "motor") || strings.Contains(normalized, "engine") || strings.Contains(normalized, "rpm"):
 		return "motor"
@@ -2070,6 +2173,15 @@ func telemetryCategoryRank(category string) int {
 	return 99
 }

+func telemetryProtocolRank(protocol string) int {
+	for index, candidate := range canonicalVehicleProtocols {
+		if protocol == candidate {
+			return index
+		}
+	}
+	return len(canonicalVehicleProtocols)
+}
+
 func telemetryCategoryLabel(category string) string {
 	labels := map[string]string{"vehicle": "整车数据", "motor": "驱动电机", "fuel-cell": "燃料电池", "battery": "电池", "location": "定位", "alarm": "报警", "quality": "数据质量", "extension": "扩展字段"}
 	if label := labels[category]; label != "" {
@@ -2086,9 +2198,28 @@ func metricDefinitions() []MetricDefinition {
 		{Key: "alarm_active", Label: "协议告警位", Description: "协议报文是否携带活动告警", Unit: "", Category: "safety", ValueType: "boolean", Protocols: []string{"GB32960", "JT808"}, SourceFields: map[string]string{"GB32960": "gb32960.alarm.general_alarm_flag", "JT808": "jt808.location.alarm_flag"}, Searchable: true, Chartable: false, Alertable: true},
 		{Key: "freshness_sec", Label: "离线时长", Description: "最新数据距当前时间的秒数", Unit: "s", Category: "quality", ValueType: "numeric", Protocols: allProtocols, SourceFields: map[string]string{"PLATFORM": "vehicle_realtime_location.updated_at"}, Searchable: true, Chartable: true, Alertable: true},
 		{Key: "data_delay_sec", Label: "数据延迟", Description: "服务接收时间与设备事件时间的差值", Unit: "s", Category: "quality", ValueType: "numeric", Protocols: allProtocols, SourceFields: map[string]string{"PLATFORM": "received_at-event_time"}, Searchable: true, Chartable: true, Alertable: true},
-		{Key: "total_mileage_km", Label: "总里程", Description: "车辆累计行驶里程", Unit: "km", Category: "driving", ValueType: "numeric", Protocols: allProtocols, SourceFields: map[string]string{"GB32960": "gb32960.vehicle.total_mileage_km", "JT808": "jt808.location.total_mileage_km", "YUTONG_MQTT": "yutong.vehicle.total_mileage_km"}, Searchable: true, Chartable: true, Alertable: false},
+		{Key: "total_mileage_km", Label: "总里程", Description: "车辆累计行驶里程；JT808 为 GPS 里程，其余为仪表盘里程", Unit: "km", Category: "driving", ValueType: "numeric", Protocols: allProtocols, SourceFields: map[string]string{"GB32960": "gb32960.vehicle.total_mileage_km", "JT808": "jt808.location.total_mileage_km", "YUTONG_MQTT": "yutong_mqtt.data.total_mileage_km"}, Searchable: true, Chartable: true, Alertable: false},
 		{Key: "longitude", Label: "经度", Description: "WGS84/协议归一化经度", Unit: "°", Category: "location", ValueType: "numeric", Protocols: allProtocols, SourceFields: map[string]string{"PLATFORM": "vehicle_realtime_location.longitude"}, Searchable: true, Chartable: false, Alertable: false},
 		{Key: "latitude", Label: "纬度", Description: "WGS84/协议归一化纬度", Unit: "°", Category: "location", ValueType: "numeric", Protocols: allProtocols, SourceFields: map[string]string{"PLATFORM": "vehicle_realtime_location.latitude"}, Searchable: true, Chartable: false, Alertable: false},
+		{Key: "vehicle_status", Label: "车辆状态", Description: "GB/T 32960 整车状态码", Unit: "", Category: "vehicle", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.vehicle.vehicle_status"}, Searchable: true, Chartable: false, Alertable: true},
+		{Key: "charge_status", Label: "充电状态", Description: "GB/T 32960 充电状态码", Unit: "", Category: "energy", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.vehicle.charge_status"}, Searchable: true, Chartable: false, Alertable: true},
+		{Key: "total_voltage_v", Label: "总电压", Description: "动力电池总电压", Unit: "V", Category: "energy", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.vehicle.total_voltage_v"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "total_current_a", Label: "总电流", Description: "动力电池总电流", Unit: "A", Category: "energy", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.vehicle.total_current_a"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "insulation_kohm", Label: "绝缘电阻", Description: "整车绝缘电阻", Unit: "kΩ", Category: "safety", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.vehicle.insulation_kohm"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "fuel_cell_voltage_v", Label: "燃料电池电压", Description: "燃料电池系统输出电压", Unit: "V", Category: "fuel-cell", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.fuel_cell.fuel_cell_voltage_v"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "fuel_cell_current_a", Label: "燃料电池电流", Description: "燃料电池系统输出电流", Unit: "A", Category: "fuel-cell", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.fuel_cell.fuel_cell_current_a"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "hydrogen_consumption_kg_per_100km", Label: "百公里氢耗", Description: "燃料电池系统百公里氢气消耗量", Unit: "kg/100km", Category: "fuel-cell", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.fuel_cell.hydrogen_consumption_kg_per_100km"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "hydrogen_concentration_percent", Label: "最高氢浓度", Description: "氢气浓度最高值", Unit: "%", Category: "fuel-cell", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.fuel_cell.max_hydrogen_concentration_percent"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "hydrogen_pressure_mpa", Label: "最高氢气压力", Description: "燃料电池系统氢气压力探针的最高读数", Unit: "MPa", Category: "fuel-cell", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.fuel_cell.max_hydrogen_pressure_mpa"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "hydrogen_temperature_c", Label: "最高氢气温度", Description: "燃料电池系统氢气温度探针的最高读数", Unit: "℃", Category: "fuel-cell", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.fuel_cell.max_hydrogen_temperature_c"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "engine_speed_rpm", Label: "发动机转速", Description: "发动机曲轴转速", Unit: "rpm", Category: "vehicle", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.engine.crank_speed_rpm"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "max_cell_voltage_v", Label: "单体最高电压", Description: "动力电池单体电压最高值", Unit: "V", Category: "energy", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.extreme.max_voltage_v"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "min_cell_voltage_v", Label: "单体最低电压", Description: "动力电池单体电压最低值", Unit: "V", Category: "energy", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.extreme.min_voltage_v"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "max_battery_temperature_c", Label: "电池最高温度", Description: "动力电池温度探针最高值", Unit: "℃", Category: "energy", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.extreme.max_temp_c"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "min_battery_temperature_c", Label: "电池最低温度", Description: "动力电池温度探针最低值", Unit: "℃", Category: "energy", ValueType: "numeric", Protocols: []string{"GB32960"}, SourceFields: map[string]string{"GB32960": "gb32960.extreme.min_temp_c"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "gnss_satellite_count", Label: "GNSS 卫星数", Description: "JT/T 808 定位终端参与定位的卫星数量", Unit: "颗", Category: "location", ValueType: "numeric", Protocols: []string{"JT808"}, SourceFields: map[string]string{"JT808": "jt808.location.additional.gnss_satellite_count"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "network_signal_strength", Label: "通信信号强度", Description: "JT/T 808 终端无线通信信号强度", Unit: "", Category: "quality", ValueType: "numeric", Protocols: []string{"JT808"}, SourceFields: map[string]string{"JT808": "jt808.location.additional.network_signal_strength"}, Searchable: true, Chartable: true, Alertable: true},
+		{Key: "fuel_l", Label: "油量", Description: "JT/T 808 终端上报的车辆油量", Unit: "L", Category: "vehicle", ValueType: "numeric", Protocols: []string{"JT808"}, SourceFields: map[string]string{"JT808": "jt808.location.additional.fuel_l"}, Searchable: true, Chartable: true, Alertable: true},
 	}
 }

@@ -2593,19 +2724,51 @@ func mergeDiscoveredRawMetrics(base []HistoryMetricDefinition, rows []HistoryDat
 	sort.Strings(keys)
 	for _, key := range keys {
 		label, unit := rawMetricMetadata(key)
-		result = append(result, HistoryMetricDefinition{Key: key, Label: label, Unit: unit, Category: "raw", ValueType: "dynamic", DefaultVisible: len(result) < 7})
+		metric := HistoryMetricDefinition{Key: key, Label: label, Unit: unit, Category: "raw", ValueType: "dynamic", DefaultVisible: len(result) < 7}
+		if reference, ok := gb32960ReferenceForSource(key); ok {
+			metric.Label = reference.Label + " · GB32960"
+			metric.Description = reference.Description
+			metric.Unit = reference.Unit
+			metric.ValueMappings = reference.ValueMappings
+		}
+		result = append(result, metric)
 	}
 	return result
 }

 func rawMetricMetadata(key string) (string, string) {
+	if reference, ok := gb32960ReferenceForSource(key); ok {
+		return reference.Label + " · GB32960", reference.Unit
+	}
 	parts := strings.Split(key, ".")
 	tail := parts[len(parts)-1]
 	protocol := strings.ToUpper(parts[0])
-	labels := map[string]string{"speed_kmh": "速度", "total_mileage_km": "总里程", "avg_voltage_v": "平均电压", "soc_percent": "SOC", "longitude": "经度", "latitude": "纬度", "direction": "方向", "current_a": "电流", "temperature_c": "温度"}
+	labels := map[string]string{
+		"speed_kmh": "速度", "recorder_speed_kmh": "行驶记录仪速度", "total_mileage_km": "总里程", "avg_voltage_v": "平均电压",
+		"soc_percent": "SOC", "longitude": "经度", "latitude": "纬度", "direction": "方向", "direction_deg": "方向角", "altitude_m": "海拔",
+		"current_a": "电流", "temperature_c": "温度", "vehicle_status": "车辆状态", "charge_status": "充电状态", "running_mode": "运行模式",
+		"total_voltage_v": "总电压", "total_current_a": "总电流", "dc_dc_status": "DC/DC 状态", "gear": "挡位", "insulation_kohm": "绝缘电阻",
+		"accelerator_pct": "加速踏板开度", "brake_pct": "制动踏板状态", "state": "工作状态", "controller_temperature_c": "控制器温度",
+		"speed_rpm": "转速", "torque_nm": "转矩", "motor_temperature_c": "驱动电机温度", "controller_voltage_v": "控制器输入电压",
+		"controller_current_a": "控制器母线电流", "fuel_cell_voltage_v": "燃料电池电压", "fuel_cell_current_a": "燃料电池电流",
+		"hydrogen_consumption_kg_per_100km": "百公里氢耗", "temperature_probe_count": "温度探针数量", "max_hydrogen_temperature_c": "最高氢气温度",
+		"max_hydrogen_temperature_probe_id": "最高氢温探针编号", "max_hydrogen_concentration_fraction": "最高氢气浓度占比",
+		"max_hydrogen_concentration_percent": "最高氢浓度", "max_hydrogen_concentration_ppm": "最高氢浓度原始值", "max_hydrogen_concentration_probe_id": "最高氢浓度探针编号",
+		"max_hydrogen_pressure_mpa": "最高氢气压力", "max_hydrogen_pressure_probe_id": "最高氢压探针编号",
+		"engine_status": "发动机状态", "crank_speed_rpm": "发动机转速", "fuel_rate": "燃料消耗率",
+		"max_voltage_subsystem_no": "最高电压子系统编号", "max_voltage_cell_no": "最高电压单体编号", "max_voltage_v": "单体最高电压",
+		"min_voltage_subsystem_no": "最低电压子系统编号", "min_voltage_cell_no": "最低电压单体编号", "min_voltage_v": "单体最低电压",
+		"max_temp_subsystem_no": "最高温度子系统编号", "max_temp_probe_no": "最高温度探针编号", "max_temp_c": "电池最高温度",
+		"min_temp_subsystem_no": "最低温度子系统编号", "min_temp_probe_no": "最低温度探针编号", "min_temp_c": "电池最低温度",
+		"max_alarm_level": "最高告警等级", "general_alarm_flag": "通用告警标志", "alarm_flag": "告警标志", "status_flag": "状态标志",
+		"fuel_l": "油量", "manual_alarm_event_id": "人工确认告警事件编号", "carriage_temperature_c": "车厢温度",
+		"network_signal_strength": "通信信号强度", "gnss_satellite_count": "GNSS 卫星数", "device_time": "设备时间",
+		"hydrogen_mass_kg": "储氢质量", "gd_fc_vehicle_hydrogen_mass_kg": "储氢质量", "stack_temp_c": "电堆温度",
+		"gd_fc_demo_stack_temp_c": "电堆温度", "controller_temp_c": "控制器温度", "gd_fc_dcdc_controller_temp_c": "燃料电池 DC/DC 控制器温度",
+	}
 	label := labels[tail]
 	if label == "" {
-		label = strings.ReplaceAll(tail, "_", " ")
+		label = humanizeRawMetricTail(tail)
 	}
 	if protocol != "" {
 		label += " · " + protocol
@@ -2614,6 +2777,8 @@ func rawMetricMetadata(key string) (string, string) {
 	switch {
 	case strings.HasSuffix(tail, "_kmh"):
 		unit = "km/h"
+	case strings.HasSuffix(tail, "_kg_per_100km"):
+		unit = "kg/100km"
 	case strings.HasSuffix(tail, "_km"):
 		unit = "km"
 	case strings.HasSuffix(tail, "_percent"):
@@ -2624,10 +2789,63 @@ func rawMetricMetadata(key string) (string, string) {
 		unit = "A"
 	case strings.HasSuffix(tail, "_temperature_c") || strings.HasSuffix(tail, "_c"):
 		unit = "℃"
+	case strings.HasSuffix(tail, "_rpm"):
+		unit = "rpm"
+	case strings.HasSuffix(tail, "_nm"):
+		unit = "N·m"
+	case strings.HasSuffix(tail, "_mpa"):
+		unit = "MPa"
+	case strings.HasSuffix(tail, "_kohm"):
+		unit = "kΩ"
+	case strings.HasSuffix(tail, "_ppm"):
+		unit = "ppm"
+	case strings.HasSuffix(tail, "_kg"):
+		unit = "kg"
+	case strings.HasSuffix(tail, "_deg"):
+		unit = "°"
+	case strings.HasSuffix(tail, "_m"):
+		unit = "m"
+	case strings.HasSuffix(tail, "_l"):
+		unit = "L"
 	}
 	return label, unit
 }

+func humanizeRawMetricTail(tail string) string {
+	tokenLabels := map[string]string{
+		"max": "最高", "min": "最低", "avg": "平均", "total": "总", "vehicle": "车辆", "battery": "电池",
+		"fuel": "燃料", "cell": "电池", "hydrogen": "氢气", "motor": "电机", "engine": "发动机", "controller": "控制器",
+		"stack": "电堆", "inlet": "入口", "outlet": "出口", "pressure": "压力", "temperature": "温度", "temp": "温度",
+		"voltage": "电压", "current": "电流", "speed": "速度", "mileage": "里程", "status": "状态", "count": "数量",
+		"probe": "探针", "serial": "序号", "subsystem": "子系统", "signal": "信号", "strength": "强度", "alarm": "告警",
+		"level": "等级", "rate": "速率", "mass": "质量", "consumption": "消耗量", "capacity": "容量", "soc": "SOC",
+	}
+	var builder strings.Builder
+	for _, token := range strings.Split(tail, "_") {
+		if label := tokenLabels[token]; label != "" {
+			builder.WriteString(label)
+		} else if token != "" && !isRawMetricUnitToken(token) {
+			if builder.Len() > 0 {
+				builder.WriteByte(' ')
+			}
+			builder.WriteString(strings.ToUpper(token))
+		}
+	}
+	if builder.Len() == 0 {
+		return strings.ReplaceAll(tail, "_", " ")
+	}
+	return builder.String()
+}
+
+func isRawMetricUnitToken(token string) bool {
+	switch token {
+	case "kmh", "km", "v", "a", "c", "rpm", "nm", "mpa", "kohm", "ppm", "kg", "pct", "percent", "deg", "m", "l":
+		return true
+	default:
+		return false
+	}
+}
+
 func (s *Service) CreateHistoryExport(ctx context.Context, request HistoryExportRequest) (HistoryExportJob, error) {
 	principal, ok := PrincipalFromContext(ctx)
 	if !ok {
@@ -3170,7 +3388,12 @@ func historyExportColumns(category string, requested []string) []HistoryMetricDe
 			continue
 		}
 		label, unit := rawMetricMetadata(key)
-		selected = append(selected, HistoryMetricDefinition{Key: key, Label: label, Unit: unit, Category: "raw", ValueType: "dynamic", DefaultVisible: true})
+		metric := HistoryMetricDefinition{Key: key, Label: label, Unit: unit, Category: "raw", ValueType: "dynamic", DefaultVisible: true}
+		if reference, ok := gb32960ReferenceForSource(key); ok {
+			metric.Description = reference.Description
+			metric.ValueMappings = reference.ValueMappings
+		}
+		selected = append(selected, metric)
 		known[key] = true
 	}
 	return selected
@@ -3200,7 +3423,11 @@ func historyExportRecord(row HistoryDataRow, columns []HistoryMetricDefinition)
 			record = append(record, "")
 			continue
 		}
-		record = append(record, fmt.Sprint(value))
+		if display := protocolDisplayValue(column.Key, value); display != "" {
+			record = append(record, display)
+		} else {
+			record = append(record, fmt.Sprint(value))
+		}
 	}
 	return record
 }
@@ -3368,27 +3595,37 @@ func analyzeTrackPoints(raw []HistoryLocationRow) ([]HistoryLocationRow, TrackQu

 func selectTrackPrimarySource(points []HistoryLocationRow, requestedProtocol string) ([]HistoryLocationRow, string, int) {
 	requestedProtocol = strings.ToUpper(strings.TrimSpace(requestedProtocol))
-	counts := map[string]int{}
-	latest := map[string]time.Time{}
+	grouped := map[string][]HistoryLocationRow{}
 	for _, point := range points {
 		protocol := strings.ToUpper(firstNonEmpty(strings.TrimSpace(point.Protocol), "UNKNOWN"))
-		counts[protocol]++
-		if observedAt, ok := parseVehicleServiceTime(point.DeviceTime); ok && observedAt.After(latest[protocol]) {
-			latest[protocol] = observedAt
-		}
+		grouped[protocol] = append(grouped[protocol], point)
 	}
 	selected := requestedProtocol
 	if selected == "" {
-		protocols := make([]string, 0, len(counts))
-		for protocol := range counts {
+		protocols := make([]string, 0, len(grouped))
+		for protocol := range grouped {
 			protocols = append(protocols, protocol)
 		}
 		sort.Slice(protocols, func(i, j int) bool {
-			if counts[protocols[i]] != counts[protocols[j]] {
-				return counts[protocols[i]] > counts[protocols[j]]
+			left := trackSourceSelectionScore(grouped[protocols[i]])
+			right := trackSourceSelectionScore(grouped[protocols[j]])
+			if left.HasMovement != right.HasMovement {
+				return left.HasMovement
 			}
-			if !latest[protocols[i]].Equal(latest[protocols[j]]) {
-				return latest[protocols[i]].After(latest[protocols[j]])
+			if left.DurationSeconds != right.DurationSeconds {
+				return left.DurationSeconds > right.DurationSeconds
+			}
+			if left.CoordinateChanges != right.CoordinateChanges {
+				return left.CoordinateChanges > right.CoordinateChanges
+			}
+			if math.Abs(left.DistanceKm-right.DistanceKm) > 0.001 {
+				return left.DistanceKm > right.DistanceKm
+			}
+			if left.MovingPoints != right.MovingPoints {
+				return left.MovingPoints > right.MovingPoints
+			}
+			if len(grouped[protocols[i]]) != len(grouped[protocols[j]]) {
+				return len(grouped[protocols[i]]) > len(grouped[protocols[j]])
 			}
 			return protocols[i] < protocols[j]
 		})
@@ -3396,13 +3633,48 @@ func selectTrackPrimarySource(points []HistoryLocationRow, requestedProtocol str
 			selected = protocols[0]
 		}
 	}
-	result := make([]HistoryLocationRow, 0, counts[selected])
-	for _, point := range points {
-		if strings.EqualFold(firstNonEmpty(strings.TrimSpace(point.Protocol), "UNKNOWN"), selected) {
-			result = append(result, point)
+	result := grouped[selected]
+	return result, selected, len(points) - len(result)
+}
+
+type trackSourceScore struct {
+	HasMovement       bool
+	DurationSeconds   int64
+	CoordinateChanges int
+	MovingPoints      int
+	DistanceKm        float64
+}
+
+func trackSourceSelectionScore(points []HistoryLocationRow) trackSourceScore {
+	score := trackSourceScore{}
+	if len(points) == 0 {
+		return score
+	}
+	if start, startOK := parseVehicleServiceTime(points[0].DeviceTime); startOK {
+		if end, endOK := parseVehicleServiceTime(points[len(points)-1].DeviceTime); endOK && end.After(start) {
+			score.DurationSeconds = int64(end.Sub(start).Seconds())
 		}
 	}
-	return result, selected, len(points) - len(result)
+	for index, point := range points {
+		if point.SpeedKmh > trackStopSpeedKmh {
+			score.MovingPoints++
+		}
+		if index == 0 || !validTrackCoordinate(points[index-1]) || !validTrackCoordinate(point) {
+			continue
+		}
+		previousTime, previousOK := parseVehicleServiceTime(points[index-1].DeviceTime)
+		currentTime, currentOK := parseVehicleServiceTime(point.DeviceTime)
+		if !previousOK || !currentOK || !currentTime.After(previousTime) || currentTime.Sub(previousTime) > time.Duration(trackGapThresholdSeconds)*time.Second {
+			continue
+		}
+		distance := haversineKm(points[index-1].Latitude, points[index-1].Longitude, point.Latitude, point.Longitude)
+		score.DistanceKm += distance
+		if distance >= 0.03 {
+			score.CoordinateChanges++
+		}
+	}
+	score.HasMovement = score.CoordinateChanges >= 2 || score.DistanceKm >= 0.5 || score.MovingPoints >= 3
+	return score
 }

 func applyTrackSequenceQuality(points []HistoryLocationRow, quality *TrackQuality) {
--- a/vehicle-data-platform/apps/api/internal/platform/service_test.go
+++ b/vehicle-data-platform/apps/api/internal/platform/service_test.go
@@ -445,6 +445,31 @@ func TestTrackPrimarySourcePreventsParallelProtocolsFromBecomingOneRoute(t *test
 	}
 }

+func TestTrackPrimarySourcePrefersUsefulMovementOverHighFrequencyStaticHeartbeat(t *testing.T) {
+	points := make([]HistoryLocationRow, 0, 120)
+	for index := 0; index < 100; index++ {
+		points = append(points, HistoryLocationRow{
+			DeviceTime: time.Date(2026, 7, 16, 8, 0, index, 0, time.UTC).Format(time.RFC3339),
+			Protocol:   "YUTONG_MQTT",
+			Longitude:  121.400000,
+			Latitude:   31.200000,
+		})
+	}
+	for index := 0; index < 20; index++ {
+		points = append(points, HistoryLocationRow{
+			DeviceTime: time.Date(2026, 7, 16, 8, index, 0, 0, time.UTC).Format(time.RFC3339),
+			Protocol:   "JT808",
+			Longitude:  121.400000 + float64(index)*0.002,
+			Latitude:   31.200000 + float64(index)*0.001,
+			SpeedKmh:   36,
+		})
+	}
+	selected, protocol, alternate := selectTrackPrimarySource(points, "")
+	if protocol != "JT808" || len(selected) != 20 || alternate != 100 {
+		t.Fatalf("moving source must beat static heartbeat volume: protocol=%s selected=%d alternate=%d", protocol, len(selected), alternate)
+	}
+}
+
 func TestTrackSegmentsExposeStopsAndDataGapsWithoutClaimingIgnition(t *testing.T) {
 	points := []HistoryLocationRow{
 		{DeviceTime: "2026-07-03 10:00:00", SpeedKmh: 0, Longitude: 113.1, Latitude: 23.1},
@@ -487,6 +512,23 @@ func TestMonitorBoundsAreValidatedAndApplied(t *testing.T) {
 	}
 }

+func TestMonitorMapIgnoresInvalidOptionalBounds(t *testing.T) {
+	vehicles := Page[VehicleRealtimeRow]{
+		Items: []VehicleRealtimeRow{{
+			VIN: "LTEST000000000001", Plate: "粤A00001", Online: true, LocationAvailable: true,
+			Longitude: 113.2, Latitude: 23.1, LastSeen: "2026-07-17T15:41:00+08:00",
+		}},
+		Total: 1,
+	}
+	result, err := buildMonitorMapResponse(vehicles, url.Values{"zoom": {"12"}, "bounds": {"105,31,103,29"}})
+	if err != nil {
+		t.Fatalf("optional invalid bounds must not fail the map: %v", err)
+	}
+	if result.Total != 1 || len(result.Points) != 1 {
+		t.Fatalf("invalid bounds should fall back to the bounded unfiltered map: %+v", result)
+	}
+}
+
 func TestMonitorQueryKeepsServerOwnedKeywordAndMotionStatus(t *testing.T) {
 	query := normalizeMonitorQuery(url.Values{"keyword": {"沪A"}, "status": {"driving"}})
 	if query.Get("vin") != "沪A" || query.Get("limit") != "10000" {
@@ -921,13 +963,14 @@ func TestBuildLatestTelemetryResponseUsesCatalogAndNewestSourceEvidence(t *testi
 	definitions := []MetricDefinition{
 		{Key: "speed_kmh", Label: "速度", Description: "车辆最新行驶速度", Unit: "km/h", Category: "driving", ValueType: "numeric", SourceFields: map[string]string{"GB32960": "gb32960.vehicle.speed_kmh"}},
 		{Key: "alarm_active", Label: "协议告警位", Unit: "", Category: "safety", ValueType: "boolean", SourceFields: map[string]string{"GB32960": "gb32960.alarm.general_alarm_flag"}},
+		{Key: "hydrogen_concentration_percent", Label: "最高氢浓度", Unit: "%", Category: "fuel-cell", ValueType: "numeric", SourceFields: map[string]string{"GB32960": "gb32960.fuel_cell.max_hydrogen_concentration_percent"}},
 	}
 	frames := []RawFrameRow{
-		{ID: "new", VIN: "VIN001", Protocol: "GB32960", DeviceTime: "2026-07-14 09:29:58", ServerTime: "2026-07-14 09:29:59", ParseStatus: "ok", SourceEndpoint: "gateway-a", ParsedFields: map[string]any{"gb32960.vehicle.speed_kmh": 42.5, "gb32960.alarm.general_alarm_flag": float64(1), "vendor.custom_temperature_c": 31.2}},
+		{ID: "new", VIN: "VIN001", Protocol: "GB32960", DeviceTime: "2026-07-14 09:29:58", ServerTime: "2026-07-14 09:29:59", ParseStatus: "ok", SourceEndpoint: "gateway-a", ParsedFields: map[string]any{"gb32960.vehicle.speed_kmh": 42.5, "gb32960.alarm.general_alarm_flag": float64(1), "gb32960.fuel_cell.max_hydrogen_concentration_percent": 0.032, "vendor.custom_temperature_c": 31.2}},
 		{ID: "old", VIN: "VIN001", Protocol: "GB32960", DeviceTime: "2026-07-14 09:20:00", ServerTime: "2026-07-14 09:20:01", ParseStatus: "ok", ParsedFields: map[string]any{"gb32960.vehicle.speed_kmh": 10.0}},
 	}
 	response := buildLatestTelemetryResponse("VIN001", frames, definitions, now)
-	if response.VIN != "VIN001" || response.ScannedFrames != 2 || len(response.Values) != 3 || len(response.Categories) != 3 {
+	if response.VIN != "VIN001" || response.ScannedFrames != 2 || len(response.Values) != 4 || len(response.Categories) != 4 {
 		t.Fatalf("unexpected response: %+v", response)
 	}
 	byKey := map[string]LatestTelemetryValue{}
@@ -940,11 +983,58 @@ func TestBuildLatestTelemetryResponseUsesCatalogAndNewestSourceEvidence(t *testi
 	if alarm := byKey["alarm_active"]; alarm.Value != true || alarm.Category != "alarm" {
 		t.Fatalf("catalog boolean should be normalized: %+v", alarm)
 	}
+	if hydrogen := byKey["hydrogen_concentration_percent"]; hydrogen.Value != 0.032 || hydrogen.Category != "fuel-cell" || hydrogen.Unit != "%" {
+		t.Fatalf("fuel-cell catalog metric should retain its business category: %+v", hydrogen)
+	}
 	if extension := byKey["vendor.custom_temperature_c"]; extension.Category != "extension" || extension.Unit != "℃" || extension.Protocol != "GB32960" {
 		t.Fatalf("manufacturer extension should retain source semantics: %+v", extension)
 	}
 }

+func TestGB32960ReferenceFormatsStatusAndHistoryMetadata(t *testing.T) {
+	if display := protocolDisplayValue("gb32960.vehicle.vehicle_status", float64(1)); display != "启动（1）" {
+		t.Fatalf("vehicle status display = %q", display)
+	}
+	if display := protocolDisplayValue("gb32960.position.position_status", 6); display != "有效定位 · 南纬 · 西经（6）" {
+		t.Fatalf("position status display = %q", display)
+	}
+	columns := mergeDiscoveredRawMetrics(historyRawMetrics(), []HistoryDataRow{{Values: map[string]any{
+		"gb32960.drive_motor.motors.motor_1.state": 2,
+	}}})
+	for _, column := range columns {
+		if column.Key == "gb32960.drive_motor.motors.motor_1.state" {
+			if column.Label != "驱动电机状态 · GB32960" || len(column.ValueMappings) == 0 || column.ValueMappings[1].Label != "发电" {
+				t.Fatalf("unexpected protocol reference column: %+v", column)
+			}
+			return
+		}
+	}
+	t.Fatalf("GB32960 reference column missing: %+v", columns)
+}
+
+func TestBuildLatestTelemetryResponseRetainsSameMetricAcrossProtocols(t *testing.T) {
+	now := time.Date(2026, 7, 14, 9, 30, 0, 0, time.FixedZone("Asia/Shanghai", 8*60*60))
+	definitions := []MetricDefinition{{
+		Key: "total_mileage_km", Label: "总里程", Description: "车辆累计行驶里程", Unit: "km", Category: "driving", ValueType: "numeric",
+		SourceFields: map[string]string{"GB32960": "gb32960.vehicle.total_mileage_km", "JT808": "jt808.location.total_mileage_km"},
+	}}
+	frames := []RawFrameRow{
+		{ID: "gb", VIN: "VIN001", Protocol: "GB32960", ServerTime: "2026-07-14 09:29:59", ParseStatus: "ok", ParsedFields: map[string]any{"gb32960.vehicle.total_mileage_km": 1000.0}},
+		{ID: "jt", VIN: "VIN001", Protocol: "JT808", ServerTime: "2026-07-14 09:29:59", ParseStatus: "ok", ParsedFields: map[string]any{"jt808.location.total_mileage_km": 980.0}},
+	}
+	response := buildLatestTelemetryResponse("VIN001", frames, definitions, now)
+	if len(response.Values) != 2 {
+		t.Fatalf("same unified metric from two protocols must be retained independently: %+v", response.Values)
+	}
+	byProtocol := map[string]LatestTelemetryValue{}
+	for _, value := range response.Values {
+		byProtocol[value.Protocol] = value
+	}
+	if byProtocol["GB32960"].Label != "仪表盘总里程" || byProtocol["JT808"].Label != "GPS 总里程" {
+		t.Fatalf("mileage semantics were not preserved: %+v", byProtocol)
+	}
+}
+
 func TestLatestTelemetryQualityDistinguishesStaleAndWarnings(t *testing.T) {
 	now := time.Date(2026, 7, 14, 9, 30, 0, 0, time.FixedZone("Asia/Shanghai", 8*60*60))
 	stale, reason, freshness, delay := latestTelemetryQuality(RawFrameRow{DeviceTime: "2026-07-14 09:19:59", ServerTime: "2026-07-14 09:20:00", ParseStatus: "ok"}, now)